1. U.S. defense map and Western Hemisphere strategic bases [cartographic material] : army camps, forts Creator: Rand McNally and CompanyRichfield Oil CorporationUnited States. President (1817-1825 : Monroe). Monroe doctrine. Selections Published / Created: 1941?] Call Number: 11hd 1941S Image Count: 2 Resource Type: Maps, Atlases & Globes Found in: Beinecke Rare Book and Manuscript Library > U.S. defense map and Western Hemisphere strategic bases [cartographic material] : army camps, forts, flying fields, air bases, naval bases, mileage distances and flying times between important points, Panama Canal defenses, U.S. Navy patrol areas, propose