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[1983 typescript index, digitized by Gene Keyes 2009-03-06]
Note: I had perused these materials in person in May and
June of 1983, but only received this index a month later.





A GUIDE TO THE BERNARD J. S. CAHILL COLLECTION

OF
MAPS, DIAGRAMS AND GLOBES

RELATING TO THE
BUTTERFLY MAP,

AND  ITS DEVELOPMENT AND
PROMOTION


The Bancroft Library
University of California
Berkeley

1983



CAHILL COLLECTION                                                                     G3201.B72 svar C3



Bernard J.S. Cahill (1866-1944) was born in England and set up an architectural practice in San Francisco in 1888. He later set up another office in Oakland, Calif. While he designed a variety of buildings, he acquired a reputation as an architect of mortuary buildings. As a sideline, he studied map projections, and spent many years developing his "Butterfly Map," several variations of which are included in this collection. Additional Cahill materials are located in his [Correspondence and Papers], a collection in the Manuscripts Division of The Bancroft Library. A brief biography of Cahill appears in H.F. Whithey's Biographical Dictionary of American Architects (Deceased) (Los Angeles: 1956) and in his obituary in the New York Times Oct. 5, 1944. For a description of the Butterfly Map see Cahill's "World Map to End World Maps," Geografisker Annaler 16 (1934) 97-108. 



THE COLLECTION


   [Collection of maps, diagrams and globes relating to the Butterfly Map, and its development and promotion / B.J.S. Cahill]. -- Scales 1:14,000,000 - ca. 1:500,000,000. -- [1909?]-1936.
   205 maps and diagrams, 1 globe, 4 polyhedral globes : some ms., some col.; 110 x 163 cm. or smaller.

    Includes ms., photocopies and printed items. Most are variants of the
Butterfly map drawn or printed by B.J.S. Cahill or the Cahill World Map Co.
    Received from the Architecture Dept., University of California, Berkeley in 1968 and 1983.


INDEX

Globes

 1-5
Globe Gores

 6-8
Butterfly Map: Prototype

 8a
Butterfly Map: Orthomorphic or Conformal Variant

 9-24
Butterfly Map: Equal Area Variant

25-61a
Butterfly Map: Orthomeric Variant (Type "A")

62-66
Butterfly Map: Gnomonic or Orthodromic Variant

67-70
Butterfly Map: Gnomonic Tetrahedral Variant

71-75
Composite Sheets & Display Materials

76-98
Miscellaneous Photocopies & Printed Maps
99-107

CAHILL COLLECTION                                                                     G3201.B72 svar C3



CALL NUMBERS CONSIST OF COLLECTION NUMBER
PLUS ITEM NUMBER & CASE:

e.g., G3201.B72 svar C3     +     No. 95     +     Case XD



GLOBES


1
Case A
[Tetrahedral world globe] -- [n.d.] -- 1 globe: 4 sides, col.  ms.; 15 cm. in diam.

2
Case A
[Octahedral world globe] -- [n.d.] -- 1 globe: 8 sides, col. ms.; 15 cm. in diam.

3
Case A
[Polyhedral world globe] -- [n.d.] -- 1 globe: 14 sides, col. ms.; 12 cm. in diam

4
Case A
[Mounted world globe gores] -- [n.d.] -- 4 globe gores: col. ms., ea. mounted as 4-sided globes; 11 x 11 cm.

5
Case A
 [World globe] / Y. Sukagawa. -- Tokyo: Y. Sukagawa, [192-?]  -- 1 globe: col.; 8 cm. in diam. -- Has annotations.



GLOBE GORES

6
Case A
[Butterfly map globe gores] -- [n.d.] -- 1 set globe gores col., mounted in glass; 18 x 33 cm.
     [Ed. note: this is probably Cahill's rubber-ball globe-to-map, as  pressed under glass; naturally, the rubber has hardened with age.--GK]

7
Case A
 [Globe gore to fit Weber Costello Co's 18 in. globe] -- [n.d.]  -- 1 globe gore: ms.; 37 x 13 cm.

8
Case A
18 in globe / Made by Weber Costello Co. -- Scale
1:27,500,000 -- Chicago Heights, Ill. : The Co., [192-?]  -- 24 gobe gores:  col.; 37 x 13 cm.



BUTTERFLY
MAP: PROTOTYPE

8a
Case XD
Land map of the world of a new & original projection invented by Bernard J.S. Cahill. -- Scale ca. 1:40,000,000  -- [1909?] -- 1 map: ms.; 60 x 71 cm. -- Pen-and-ink on tracing paper. Includes 12 gores (western hemisphere repeated twice).



BUTTERFLY
MAP: ORTHOMORPHIC OR CONFORMAL VARIANT

9
Case A
[Globe gore of the Pacific from Butterfly map] -- Scale ca. 1:100,000,000. -- [n.d.] -- 1 globe gore; 23 x 14 cm  mounted on sheet 28 x 22 cm.


CAHILL COLLECTION                                                                     G3201.B72 svar C3


10
Case XB
[Butterfly map conformal variant] -- Scale ca. 1:73,000,000 -- [n.d.] -- 1 map: photocopy; on sheet 32 x 55 cm. --Photocopy: negative.

11
Case XB
----------- Scale ca. 1:73,000,000. -- [n.d.] -- 1 map:
photocopy; on sheet 32 x 55 cm. -- Blue line print. Reversed image. Intersecting lines added in pencil.

12    
Case XD      
----------- Scale ca. 1:45,000,000. -- [n.d.] -- 1 map: ms.; on sheet 64 x 101 cm. -- Pen-and-ink.

13
Case XD
----------- Scale ca. 1:35,000,000. -- [n.d.] -- 1 map: col. ms.; 78 x 134 cm. on 9 sheets. -- Mounted as 1 sheet. Pen-and-ink.

14
Case XD
----------- Scale ca. 1:35,000,000. -- [n.d.] -- 1 map:
photocopy; on sheet 91 x 143 cm. -- Black line print. Has additional grid lines & longitudes added by hand.

15
Case XD
The Butterfly map of the world, octahedral system of projection / B.J.S. Cahill. -- Scale 1:20,000,000. -- 1926. -- 1 map: photocopy; 66 x 102 cm. -- Grid lines only. "Conformal variant designed for International Meterology (Reseau mondial)". Incl. text & illus.

16
Case XD
----------- With continents, latitude and longitude, etc. added in pencil.

17
Case XD
The conformal Butterfly map: being the orthogonal or equi-angular variant of the octahedral system of projection. Deliberately designed for world-wide problems of land, sea, air or ether / B.J.S. Cahill. -- Scale ca. 1:20,000,000. -- [1936?] -- 1 map: photocopy; on sheet 106 x 124 cm. --Blue line print. "Copyright" added in pen-and-ink.

18
Case XD
All synoptic charts from one base map. Wasteful complexity versus efficient simplicity. -- Scale 1:20,000,000. -- 1936. -- 1 map: photocopy; on sheet 106 x 122 cm. -- Blueprint. "Copyright by B.J.S. Cahill, 1936" added in pen-and-ink.

19
Case XD
[Butterfly map, conformal variant] -- Scale ca. 1:20,000,000. --[1929] -- 1 map: photocopy; on sheet 104 x 63 cm. -- Brown line  print. Covers parts of Africa, South America and Antarctica. Annotation dated Feb. 19, 1929 by Cahill in blue pencil.

20
Case XD
----------- Scale ca. 1:20,000,000. -- [1929?] --
I map: photocopy; on sheet 106 x 121 cm. -- Blueline print. Covers most of N. hemisphere.

CAHILL COLLECTION                                                                     G3201.B72 svar C3


21
Case XD
Base map of the world from which Synoptic charts for daily use can be selected ... The Conformal Butterfly map for meteorologists / B.J.S. Cahill. -- Scale 1:20,000,000. -- [1929?] -- 1 map: photocopy; on sheet 110 x 152 cm. Title information added in pen-and-ink. "This sketch map shows the N. hemipshere complete and enough of the S. hemisphere to include the habitable land masses & islands of the South Pacific."

22
Case XB
The Conformal Butterfly map: being the orthogonal or equi-angular variant of the Octahedral system of projectiont deliberately designed for world-wide problems of land, sea, air or ether / B.J.S. Cahill. -- Scale ca. 1:100,000,000. -- [1928?] -- 1 map in 2 segments: hand col.; on sheet 30 x 50 cm. -- "Rectangle selected by Dr. LaCour of the Central Hydrographic Bureau of Copenhagen for trimestrial weather charts of the N. Atlantic, 1928," added in pencil.

22a
Case XB
The conformal Butterfly map: being the orthogonal or equi-angular variant of the Octahedral system of projection deliberately designed for world-wide problems of land, sea, air or ether / B.J.S. Cahill. -- Scale ca. 1:150,000,000. --[Oakland? : Cahill 1928?] -- 1 map in 2 segments; on sheet 23 x 37 cm.

23
Case XB
A new map for meteorologists equally suitable for small areas, continents, hemispheres or the entire world. The. Conformal Butterfly map: being the orthogonal or equi-angular variant of the Octahedral system of projection ... / By B.J.S. Cahill. -- Scale ca. 1:100,000,000, not 1:20,000,OOO as stated on map. -- [Oakland? : Cahill?, 1928?] -- 1 map in 2 segments; on sheet 35 x 52 cm. -- Includes text, illus., and resolution adopted by the American Meterological Society... June, 1928.

24
Case XD
Meteorological plotting chart. Map no. 2. The conformal Butterfly map, orthogonal or equi-angular variant of the octahedral system of projection / By B.J.S. Cahill; computation of Dr. Oscar S. Adams. -- Scale 1:16,000,000. --[San Francisco?] : Pan American Airways System, Meteorological Section, Communications Dept., [1936?] (San Francisco: Schwabacher-Frey) -- 1 map: 98 x 102 cm. -- Covers the Pacific.

24a
Case XB
N. Atlantic, conformal variant Butterfly map / B.J.S. Cahill. --Scale ca. 1:21,000,000. -- Kjobenhaven : A.E. Aamodt, [19--] -- 1 map; 50 x 38 cm. -- Title added in pen-and-ink. Has annotation. Second copy has annotations in pencil.

24b
Case XB
N. Atlantic - Conformal variantt Butterfly projection. -- Scale ca. 1:21,000,000. -- Kjobenhaven : A.E. Aamodt, [19--]. -- 1 map: photocopy; 50 x 38 cm. -- Blue line print. Title added in pencil.


CAHILL COLLECTION                                                                     G3201.B72 svar C3


BUTTERFLY MAP: EQUAL AREA VARIANT

25
Case A
[Butterfly map, equal area variant] -- Scale ca. 1:500,000,000. -- 2 maps; 3 x 3 cm. and 4 x 7 cm. mounted on sheet 7 x 13 cm.

26
Case A
[Butterfly map, equal-area variant globe gore for part of Asia] -- Scale ca. 1:62,000,000. -- [n.d.] -- 1 globe gore: on sheet 17 x 30 cm.

27
Case A
[Photographs of Butterfly map, equal Area projection] -- Scale ca. 1:80,000,000. -- [n.d.] -- 4 globe gores: photocopy; on sheets 20 x 25 cm. and 25 x 20 cm. -- Photographed by Gabriel Moulin, San Francisco.

28
Case A
[Globe gore of the Americas from Butterfly map, equal area variant] -- Scale ca. 1:85,000,000. -- [n.d.] -- 1 map photocopy; 25 x 20 cm. -- Photograph by Gabriel Moulin.

29
Case XB
[Butterfly map, Octahedral equal area variant showing shipping routes] -- Scale ca. 1:150,000,000. -- [n.d.] -- 1 map: hand col.; on sheet 33 x 37 cm.

30
Case XB
[Butterfly map: Octahedral equal area variant] -- Scale ca. 1:150,000,000. -- [n.d.] -- 1 map: photocopy; on sheet 30 x 37 cm. -- Vandyke negative.

31
Case XB
----------- Scale ca. 1:50,000,000. -- [n.d.] -- 1 map: ms.; on 2 sheets 51 x 46 cm. -- Pencil on tracing paper.

32
Case XB
----------- Scale ca. 1:90,000,000. -- [n.d.] -- 1 map:
photocopy; on sheet 25 x 59 cm. -- Has annotations in pencil.

33
Case XD
----------- Scale ca. 1:32,000,000. -- [n.d.] -- 1 map: col. ms.; on 2 sheets 73 x 91 cm. -- Pen-and-ink on tracing cloth

34
Case XD
----------- Scale ca. 1:31,000,000. -- [n.d.] -- 1 map: ms.; on 2 sheets 76 x 95 cm. -- Pen-and-ink on tracing cloth.

35
Case XD
----------- Scale ca. 1:65,000,000. -- [n.d.] -- 1 map: ms.; on sheet 61 x 82 cm. -- Pencil on tracing paper.

36
Case XD
----------- Scale ca. 1:30,000,000. -- [n.d.] -- 1 map: hand col.; 80 x 148 cm. mounted on sheet 88 x 155 cm.

37
Case XD
----------- Scale ca. 1:40,000,000.  -- [n.d.] -- 1 map photocopy; on sheet 80 x 114 cm. -- Brown line print.

38
Case XD
-----------  Scale    ca. 1:32,000,000.  -- [n.d.] -- 1 map photocopy; on sheet 92 x 108 cm. -- Brown line print.


CAHILL COLLECTION                                                                     G3201.B72 svar C3

39
Case XD
----------- Scale ca. 1:50,000,000. -- [n.d.] -- 1 map: col. ms.; on sheet 79 x 133 cm. -- Pencil and watercolor.

40
Case XD
Outline map of the world to the scale of an 18 inch globe: Drawn on the "Butterfly" projection invented by B.J.S. Cahill / Statistical map published & copyrighted 1915 by The Cahill World Map Co. -- Scale ca. 1:26,814,000. -- San Francisco, Cal. : The Co., c1915. -- 1 map: ms.; on sheet 101 x 163 cm. -- Pen-and-ink on tracing cloth. "Map no. 245. The Statistics Bureau . . . New York."

41
Case XD
[Butterfly map: Octahedral equal area variant] -- Scale ca. 1:14,000,000. -- [1919?] -- 1 map: photocopy; on 6 sheets 99 x 146 cm. or smaller. -- Blue line print. Shows boundaries, cities, drainage, etc. Incomplete: Lacks sheet for S. Pacific.

42
Case XD
-----------  Scale ca. 1:14,000,000. -- [19l9?] -- 1 map
photocopy; on 6 sheets 99 x 146 cm. or smaller. -- Blue line print. Shows boundaries, cities, drainage, etc. Has annotations in pencil. Some sheets have pencilled date: 30-11-19.

43
Case XD
[Butterfly map: Octahedral equal area variant, South America gore] -- Scale ca. 1:14,000,000. -- [1919?] -- 1 map: photocopy; on sheet 82 x 75 cm. -- Blue line print. Place names added in pencil. The Cahill World Map Co. logo stamped on verso.

44
Case XD
[Butterfly map: Octahedral equal area variant] -- Scale ca. 1:31,000,000. -- [n.d.] -- 1 map: photocopy; on 2 sheets 81 x 93 cm. -- Brown line print. Place names added in pen-and- ink.

45
Case XD
Map of the world to the scale of a 6 inch globe: drawn on the "Butterfly" projection invented by B.J.S. Cahill. -- Scale ca. 1:63,360,000. -- [1913?] -- 1 map: ms.; 51 x 69cm. -- Pen-and-ink on cloth. Has annotations in pencil. "School desk map-publisherd & copyrighted by the Cahill World Map Co., San Francisco, Cal., U.S.A."

46
Case XD
The circumaviation of the globe: the route of the airmen shown on the Butterfly map octahedral projection /. invented by B.J.S. Cahill. -- Scale ca. 1:63,360,000. -- [San Francisco? : Cahill] 1922. -- 1 map: hand col. photocopy; on sheet 56 x 83 cm.

47
Case XB
Sea routes shown on the Butterfly map invented by B.J.S. Cahill. -- Scale ca. 1:118,000,000. -- [San Francisco?] Pacific Marine Review, 1921. -- 1 map; on sheet 24 x 32 cm. -- "Reprinted from the Pacific Marine Review, the national magazine of shipping, January, 1921."


CAHILL COLLECTION                                                                     G3201.B72 svar C3


48
Case XB
Map of the world to the scale of a 6 inch globe: drawn on the "Butterfly" projection. Invented by B.J.S. Cahill. -- Scale ca. 1:83,000,000. -- Oakland, Calif. : Cahill, [1925?] -- 1 map; on sheet 39 x 57 cm. -- "Pat. 2-23-13."

49
Case XB
-----------  Scale ca. 1:83,000,000. -- [Oakland? Calif.: Cahill, 1925?] -- 1 map: on sheet 39 x 56 cm. -- "Pat. 2-25-13." Text & ill us. on verso.

50
Case XB
The Circumaviation of the globe: under the auspices of the Panama-Pacific Universal Exposition, San Francisco, 1915. The route of the airmen shown on the Butterfly map invented by B.J.S. Cahill. -- Scale ca. 1:100,000,000. -- San Francisco: Panama-Pacific International Exposition and the Cahill World Map Co., c1914. -- 1 map; on sheet 36 x 51 cm.

51
Case XB
Port of San Francisco, strategic center of world trade. : Sea routes shown on the Butterfly map invented by B.J.S. Cahill. -- Scale ca. 1:120,000,000. -- Sacramento: California State Printing Office, [1923] -- 1 map: col.; 22 x 39 cm. -- Has annotation by Cahill. "28883 19-23 5M." A variant appears in: Port of San Francisco, the gateway of the Pacific: Sailing list and shipping guide / Issued by Board of State Harbor Commissioners. 1922. (16 p.)

52
Case XD
Outline map of the world to the scale of an 18 inch globe: drawn on the "Butterfly" projection invented by B.J.S. Cahill / Statistical map copyrighted & published 1915 by the Cahill World Map Co. -- Scale ca. 1:26,814,000. -- San Francisco, Cal. : The Co., c1915. -- 1 map: hand col. photocopy; on sheet 94 x 154 cm. -- Brown line print. "Map no. 245. The Statistics Bureau ... New York."

53
Case XD
[Northern hemisphere globe gores for the Butterfly map] -- Scale ca. 1:29,000,000. -- [n.d.] -- 2 pairs globe gores: photocopy; 39 x 69 cm. -- Brown line prints.

54
Case XB
Butterfly world map. -- Scale ca. 1:83,000,000. -- Chicago: Denoyer-Geppert Co., [192-?] -- 1 map; on sheet 41 x 56 cm. -- (Cartocraft desk outline map. World No. 15098) -- "Cahill's octahedral system of world map projection. Equivalent to the scale of a six inch globe."

55
Case XB
[Butterfly map, octahedral equal area variant globe gores] --Scale ca. 1:30,000,000. -- [n.d.] -- 3 globe gores; 34 x 36 cm. -- Covers part of the W. hemisphere only. Added on verso by hand: Orthometric, Discarded.

56
Case A
[North half of western hemisphere, Butterfly map, equal area variant] -- Scale ca. 1:63,000,000. -- [n.d.] -- 2 globe gores; on sheet 17 x 31 cm. -- Has annotations.


CAHILL COLLECTION                                                                     G3201.B72 svar C3

57
Case XB
The Butterfly map (octahedral system): orthomeric variant, Type "C," Scale 18" globe / B.J .S. Cahill. -- Scale ca. 1:32,000,000. -- 1936 Jan. 30. -- 8 globe gores: photocopy; 34 x 37 cm. -- Brown line prints. Continents, country boundaries, annotations in pen-and-ink and pencil.
58
Case XB
[Butterfly map, octahedral system] -- Scale ca. 1:32,000,000. -- [1936?] -- 8 globe gores: photocopy; 34 x 37 cm. -- Brown line prints. Outlines of continents added by hand.

59
Case XB
Progress drawing no. 2, "The 5 zones" : The Butterfly map, octahedral system, orthomeric variant "E," scale 18" globe / B.J.S. Cahill. -- Scale ca. 1:32,000,000. -- 1936 Jan. 23. -- 4 globe gores: photocopy; 34 x 37 cm. -- Brown line prints. Covers S. hemisphere only. Continents outlined in pen-and- ink.

60
Case XB
Butterfly map of the world. -- Scale ca. 1:28,500,000. -- [n.d.] -- 8 globe gores in 7 segments; 35 x 35 cm. and 36 x 67 cm. -- Mounted on cardboard. Title in pencil on verso.
61
Case XD
[Butterfly map of the world] -- Scale ca. 1:14,000,000. --[n.d.] -- 8 globe gores: col. ms.; 70 x 69 cm. -- N. and S. gores hinged together.
61a
Case XD
American Express around the world cruise: the route shown on the Butterfly map / B.J.S. Cahill. -- Scale ca. 1:44,000,000. -- 1934. -- 1 map: col. ms.; 62 x 108 cm. -- Includes illus.


BUTTERFLY MAP: ORTHOMERIC VARIANT, TYPE "A"

62
Case XD
Rough sketch, variant no. 2, Equivalent Butterfly map / B.J.S. Cahill. -- Scale 1: 84,000,000. -- 1927 Sept. 15. -- 1 map : ms.; 39 x 58 cm. -- Pencil on tracing paper. Shows grid lines only.

63
Case XD
[Butterfly map, orthomeric variant] -- Scale ca. 1:33,500,000. -- [n.d.] -- 1 map: ms.; on sheet 69 x 83 cm. -- Pen-and-ink on tracing cloth. Shows grid lines only.

64
Case XD
----------- ,  -- Scale ca. 1:28,000,000. -- [n.d.] -- 1 map: ms.; on 2 sheets 71 x 89 cm. -- Pen-and-ink.

65
Case XD
----------- ,  -- Scale ca. 1:29,000,000. -- [n.d.] -- 1 map : photocopy; on sheet 88 x 162 cm. -- Brown line print. Pencil annotations on verso.

66
Case XB
The Butterfly map, equivalent variant Type A. -- Scale ca. 1:110,000,000. -- [n.d.] -- 1 map; on sheet 25 x 44 cm. --Title added in pen-and-ink. -- Copy 2 is without annotation.

CAHILL COLLECTION                                                                     G3201.B72 svar C3



BUTTERFLY
MAP: GNOMONIC OR ORTHODROMIC VARIANT

67 Case A
[Butterfly map gores: Gnomonic variant] -- Scale ca. 1:100,000,000. -- 1 set globe gores: col. ms.; 18 x 21 cm. on 2 sheets.

68
Case XB
Gnomonic octahedral variant. -- Scale ca. 120,000,000. -- [n.d.]  -- 1 map; on sheet 24 x 37 cm. -- Title added by hand.

69
Case XB
[Gnomonic octahedral variant] -- Scale 1:100,000,000. -- [1929?]  -- 1 map; on sheet 32 x 49 cm. -- Has annotations. "29.'29."

70
Case XD
Graticules of the octahedral gnomonic projection ... for radio / B.J.S. Cahill inv. & del. -- Scale ca. 1:42,000,000. -- 1923 May 15. -- 1 map: ms.; on sheet 78 x 105 cm. -- Pen-and-ink on tracing cloth. Shows grid system only.

70a
Case A
The world: Octahedral projection or the Butterfly map. Gnomonic version. An eight-part folding or interchangeable set of gnomonic charts ... / B.J.S. Cahill. -- Scale ca. 1:150,000,000. -- 1924 Oct. 4. -- 1 map: photocopy; on sheet 16 x 28 cm. -- Includes text and illus. Has pencil annotation on verso: "... reduced from a large blue print sketch map or group of charts sent to Monaco for radio problems ..."



BUTTERFLY MAP: GNOMONIC TETRAHEDRAL VARIANT

71
Case XD
[Butterfly map: gnomonic tetrahedral variant] -- Scale ca. 1:23,000,000. -- [n.d.] -- 1 map: ms.; on 4 sheets 105 x 117 cm. -- Pen-and-ink on tracing paper.

72
Case XB
Gnomonic tetrahedral set of charts, 1st, 2nd. -- Scale ca. 1:120,000,000. -- [n.d.] -- 2 maps: on sheet 39 x 55 cm. --Title added in pen-and-ink.

73
Case XD
[Gnomomic tetrahedral section] -- Scale undetermined. -- [n.d.] -- 1 map: photocopy; 55 x 64 cm. -- Brown line print. Grid lines only.

74
Case XD
[Portion of gnomonic tetrahedral section] -- Scale undetermined. -- [n.d.] -- 1 map: ms.; on sheet 77 x 112 cm. -- Pen-and-ink on tracing cloth. Grid system only.

75
Case XB
[Gnomonic tetrahedral variant] -- Scale ca. 1:120,000,000. -- [n.d.] -- 1 map; on sheet 32 x 49 cm.



COMPOSITE SHEETS AND DISPLAY MATERIALS

76
Case XD
[Orthomeric equal area and orthodromic variants] -- Scales 1:100,000,000-1:140,000,000. -- [n.d.] -- 3 maps; on sheet 72 x 44 cm.


CAHILL COLLECTION                                                                     G3201.B72 svar C3

77
Case XD
[Gnomonic variant, right & left tetrahedral projections] --Scale ca. 1:120,000,000. -- [n.d.] -- 3 maps; on sheet 72 x 44 cm. -- Copy 2 has annotations and color added in pencil and watercolor.

78
Case XD
A New map for meteorologists ... The conformal Butterfly map. --Scales vary. -- [n.d.] -- 7 maps, 2 charts; on sheet 62 x 46 cm.

79
Case XB
[Globe of derivation] -- [n.d.] -- 1 map; on sheet 27 x 44 cm. -- Large numerals (1,2,3) added in pen-and-ink. Shows 1/4 of conformal and gnomonic variants, and 1/2 of the equal area variant.

80
Case A
Tetrahedral world maps. -- [n.d.] -- 2 charts: ms.; on sheet 16 x 30 cm. -- Pen-and-ink on cloth. -- CONTENTS: The Gnomonic Butterfly map.--The Lothian Green & other concepts.

81
Case XB
Tetrahedral gnomonic extensions with segmental overlaps and Azimuthal finders. -- [n.d.] -- 1 chart: ms.; 47 x 36 cm. --Pen-and-ink on tracing cloth.

82
Case XB
An octahedron extended to left & right: large tetrahedron. --[n.d.] -- 2 charts: ms.; on sheet 26 x 28 cm. -- Pen-and-ink on tracing cloth.

83
Case XB
Graphic azimuthal conversions and compass bearings without computation, orthodromic variant of the Butterfly map / .B.J.S. Cahill. -- [n.d.] -- 1 chart: ms.; 35 x 53 cm. -- Pen-and-ink on cloth.

84
Case XB
Graphic azimuthal conversions & compass bearings without computation, orthodromic V. of the Butterf[ly] / by B.J.S. Cahill. -- 1932 Jul. 18. -- 1 chart: photocopy; 31 x 51 cm. -- Blueprint. "Rough draft."

85
Case XD
Tables and diagram for finding the true forward and retro azimuths between any two points on the gnomonic Butterfly map / B.J.S. Cahill. -- 1931 Mar. 9. -- 1 chart: photocopy; 41 x 69 cm. -- Blueprint. "10."

86
Case XB
To join in great O points X in 1 & Y in 2. To join in great O points X in 1 and Y in 3. -- [n.d.] -- 2 charts: ms.; on sheet 23 x 48 cm. -- Pen-and-ink on tracing cloth.

87
Case XD
All great circles on the octahedron are lines cut by planes passing through the center ... -- [n.d.] -- 3 charts: ms.; on sheet 50 x 72 cm. -- Pen-and-ink on tracing paper. Annotations in pencil.

88
Case XB
The Butterfly map (octahedral system of projection) Type "C" orthomeric or equal variant, preliminary sketch, from octants / B.J.S. Cahill. -- Scale undetermined. -- 1933 Nov. 27. -- 1 map: ms; 47 x 50 cm. -- Pen-and-ink and pencil on cloth.


CAHILL COLLECTION                                                                     G3201.B72 svar C3

89
Case XB
The Butterfly map, octahedral system. Orthomeric variant, Type "C" construction showing map continuity on all 9 edges in 12 directions from each octant on 8 gt. cle [circle] belts / B.J.S. Cahill. -- 1936 Nov. -- 1 map: ms.; on sheet 48 x 60 cm. -- Incl. text, tables, illus. Pen-and-ink on cloth.

90
Case XB
The Butterfly map, octahedral system: Orthomeric variant types C & E folded around pseudo-spherical or quasi globular polydedral models (orthographically projected) / B.J.S. Cahill. -- Scales udetermined. -- 1936 Oct. -- 2 maps: ms.; on sheet 28 x 46 cm. -- Pen-and-ink and pencil on tracing paper.

91
Case XB
The Butterfly map, octahedral system, Type "E" (Zonal) of the orthomeric or equivalent variant / B.J.S. Cahill. -- Scale undetermined. -- 1936 Dec. 23. -- 1 map: ms.; on sheet 48 x 49 cm. -- Pen-and-ink on tracing cloth. Includes inset of polyhedral model and text.

92
Case XD
"The Butterfly Map" or octahedral system of projecting the whole world / B.J.S. Cahill. -- 1935-1936. -- 4 sheets: ms.; 46 x 57 cm. or smaller. -- Pen-and-ink and pencil on tracing cloth. CONTENTS: 1. Type "C" 2nd variant. --2. Variant no.2 ... a progress drawing. --3. Types of the orthomeric variant. --4. Orthomeric variant, Type "C" [Azimuthal] diffused distortion polyhedron of 14 sides...

93
Case XD
[Maps and charts relating to the Butterfly map] -- 1930. -- 13 maps: some ms.; 43 x 82 cm. or smaller. -- Sheets numbered Gn.1-2, 5-12. CONTENTS: Gn.l. [Orthodromic variant].--Gn.2. The eight facets of the octahedron in alternate groups of four extended to eight larger facets of a pair of alternate tetrahedrons.--Gn.5. [Tetrahedral variants].--Gn.6. Completing great circles, gnomonic Butterfly map.--Gn.7. To complete great circle points in 1, to complete great circles through any point X in 1...    Gn.8. Points X and Y in 1 and 2. Points X and Y in 1 and 3.--Gn.9. The complicated made simple as "A-B-C." Many folds seen as one fold. Copy 2 is blueprint with annotation.--Gn.l0. Without computation to find (1) the distance (2) true forward and retro azimuths between any two points on the gnomonic Butterfly map. Copy 2 is blueprint with annotations on both sides.--Gn.11. Great circles on the facets of a tetrahedron.--Gn.12. Great circles on tetrahedral extensions of the gnomonic Butterfly map. Incomplete (lower left portion missing). Copy 2 is blueprint (complete). Sheets Gn.7-9 are dated 29-10-30, and Gn.11-12 are dated Dec. 8 1930.

94
Case XD
Variant II Orthomeric, Type B. Orthodromic variant, 8 gnomonic maps / B.J.S. Cahill. -- [n.d.]. -- 2 maps: col. ms.; 26 x 40 cm. and 24 x 41 cm. on sheet 68 x 51 cm. -- Pencil and watercolor. Mounted on board.




95
Case XD
A New map for meteorologists ... The conformal Butterfly map ... The Butterfly map: octahedral system, conformal variant. / B.J.S. Cahill. -- Scale ca. 1:100,000,000. -- [n.d.] -- 2 maps: col. ms.; on sheet 69 x 51 cm. -- Pencil and watercolor. Mounted on board.

96
Case XD
1932 scope and distribution of daily synoptic charts. -- [1932?] -- 1 map; 28 x 48 cm. -- Printed map (A new map for meteorologists ...) with additions in pen-and-ink.

97
Case XD
Octants were used by Leonardo da Vinci in his Mappemonde of 1513. -- [193-?] -- 2 maps: photocopy; 30 x 38 cm. Mounted with hand-lettered title.

98
Case XB
The world. Drawn on Eclectic map blank no. 22. -- Scale at the equator ca. 1:95,040,000. -- [n.d.] -- 1 map; 27 x 42 cm. -- Hand col. and annotated to show sea routes. Mounted on board. Copy 2: graticules and continent shading added in pen-and-ink.



MISCELLANEOUS

99
Case A
[Photocopies of various projections] / Kautz, sculp. -- [France? : s.n., n.d.] -- 5 sheets : photocopy; 22 x 36 cm. or smaller.

100
Case XB
Linien gleicher Entfernung auf Dampferwegen von Punta Arenas / Dr. A. Schumacher. -- Scale 1:80,000,000. -- Hamburg: Druck der Deutschen Seewarte, 1924. -- 1 map; 22 x 42 cm. --"Annalen der Hydrographie usw. 1924. Tafel 25."

101
Case XD
Bartholomew's route chart of the world / John Bartholomew & Co. -- Scale ca. 1:90,000,000. -- Edinburgh: Edinburgh Geographical Inst., [192-?] -- 1 map: col.; 50 x 71 cm. folded in cover 22 x 13 cm. -- Cover title.

102
Case XD
Rand McNally standard map of the world on Mercator's projection / Copyright by Rand McNally & Company. -- Scale ca. 1:90,000,000. -- Chicago: The Co., [1924?] -- 1 map: col.; 47 x 65 cm.

103
Case XD
Aitoff's equal area projection of the sphere. -- Scale ca. 1:64,000,000. -- Washington, D.C.: U.S. Coast and Geodetic Survey, 1920. -- 1 map; on sheet 47 x 65 cm. -- Shows grid system only.

104
Case XD
Philips' British Empire globe / George Philip & Son Ltd. --Scale ca. 1:65,000,000. -- London: Philip, [192-?] -- 1 map: col.; on sheet 36 x 86 cm. -- Unmounted globe gores.


CAHILL COLLECTION                                                                     G3201.B72 svar C3

105 Case XD
The world: prepared especially for the National Geographic Magazine. -- Scale ca. 1:39,600,000. -- Washington, D.C. : National Geographic Society, c1922. -- 1 map: col.; 67x 101 cm.

106
Case XD
Flat-globe of the world / World Flat-Globe Corporation; Edited by Admiral Robert E. Peary. -- Scale ca. 1:30,000,000. -- New York City: The Corp., c1919. -- 1 map both sides: col.; 70 cm. in diam.

107
Case XD
Physical 16 inch globe / Edited by L.P. Denoyer. -- Scale 1:31,600,000. -- Chicago: Denoyer-Geppert Co., [1928?] -- 1 globe: col.; 41 cm. in diam. -- Issued unmounted as 12 gores on 2 sheets 71 x 70 cm.



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