Relief shown by hachures.; Title on slipcase: Central America, Isthmus of Tehuantepec, Panama and Nicaragua.; Transferred from the collection of the Canal Zone Library-Museum, 1980.; Hand colored.; Sectioned and mounted on back clothing.; Includes inset of "Isthmus of Panama," 5 relief profiles, notes, and list of "Length of proposed routes."; Label of publisher's advertisement mounted on verso.; Canal Zone Library map checklist number: 178. 56 x 80 centimeters Scale approximately 1:2,750,000 General Map Collection
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