National Geographic Index, 1888-1988 - National Geographic Society (U.S.) ([Washington, D.C.] : National Geographic Society, 1989)
Accompanied by "Maps of the United States and the world and cartography at the National Geographic Society, 1888-1988" (1 v. (unpaged) : 2 folded col. maps ; 26 cm.).
Keywords: National geographic -- Indexes; Geography -- Periodicals -- Indexes