Historic maps and atlases showing some of the earliest efforts to chart North America's coastline and interior are being auctioned in New York City.

Swann Auction Galleries in Manhattan is putting scores of maps up for sale beginning Tuesday. Among them are several dating to the 16th century depicting California as an island separate from the North American continent.

The highlight is a rare Revolutionary War-era atlas published by the geographer to England's King George III. The atlas includes maps of British military campaigns and a 1777 plan of New York City showing much of the settlement clustered at Manhattan's southern tip and farmland covering the rest of the island.