Two polar projections with movable measurement tools attached to each with string at the center. Each hemisphere includes three moving pieces. California shown as an unlabeled island with an indented northern coast and no place names. Title at bottom between the two hemispheres, flanked by cartographic measurement tools on either side. Folded after page 360 of text.
Image from the Glen McLaughlin Map Collection of California as an Island courtesy Stanford University Libraries. This item is in the public domain. There are no restrictions on use. If you have questions, please contact the David Rumsey Map Center at rumseymapcenter@stanford.edu.
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