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Compiled by Gene Keyes
First edition, 2007-06-05
Thumb Index
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N.B.: each map has been converted to a Comparison Scale of 1/200 M, either by enlarging or reducing the source image. (To a span of 100 mm across the outer meridians of a 4-octant subset.)

Geocell size is also specified. (In 1983, I coined the word "geocell" to designate a one-degree unit of latitude and longitude.)

Each image here cites a "defining meridian", which enables unbroken continents if the octants follow from that given longitude. Cahill's master stroke was 22 1/2° W, but it resulted in geocell assymetry: too many half-degree units throughout. So 20° W is preferable for a Cahill-inspired map. Other division-longitudes miss the point, and break up continents, e.g., Harrison, and Anderson, below.

Besides collecting scattered images of the Cahill map or derivatives, this gallery also indicates some sub-standard reproductions. Erroneous examples are marked
"X": see notes within.

This is not a complete listing; check back for updates.

1909 Cahill Original
1913 Cahill rubber ball globe~map
1914 Cahill-Denoyer
1919 Cahill
1920 Cahill M-shape S. Pacific
1934 Cahill 3-in-1
1934 Cahill M-shape
1938 Raisz
1944 Hood
1962 Dahlberg X
1975 Cahill-Keyes
1975 Harrison X
1976 Lee Conformal
1996 Furuti Gnomonic
1996 Furuti Gnomonic Truncated
1996 Waterman
1996 Waterman
ODT, biggest

2001 Furuti Gnomonic AVHRR
2001 Furuti Gnomonic Remote
2001 Furuti Gnomonic USGS
2002 Anderson Conformal X
2002 Anderson Gnomonic X
2002 Anderson Equal-area X
2006 Parry [Furuti] Gnomonic
2007 Moore (Furuti) Gnomonic

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