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1:250,000 - Agana, Guam - Joint Operations Graphic includes all of Guam and the island of Rota (Commonwealth of the Northern Mariana Islands) Sheet ND 55-9, U.S. National Imagery and Mapping Agency, compiled 1974, reprinted 2000 [GeoPDF] (4.0MB) Not for navigational use
These maps were published by the U.S. Geological Survey: