At first glance, Imus’ “The Essential Geography of the United States of America” may look like any other U.S. wall map. It’s about 4 feet by 3 feet. It uses a standard, two-dimensional ...

The U.S. Coast Survey map calculated the number of slaves in each county in the United States in 1860. Library of Congress. In September of 1861, the U.S. Coast Survey published a large map ...

The “Eagle Map of the United States, Engraved for Rudiments of National Knowledge” first appeared in an 1833 atlas published by E.L. Carey and A. Hart of Philadelphia.

In 2008, Imus dove head first into the creation of a general map of the entire United States. The work ballooned into the most grueling, demanding project of his entire career. It took 6,000 hours ...