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Maps Potomac River (in four sheets) /                                          Contributor: United States Coast Survey Site: Geography and Map Division - Military Battles and Campaigns - Civil War Maps - American Memory Original Format: Maps Date: 1862  
Maps Potomac River (in four sheets): Sheet no. 4, from Indian Head to Georgetown                                          Contributor: United States Coast Survey Site: Geography and Map Division - Civil War Maps - Military Battles and Campaigns - American Memory - Catalog Original Format: Maps Date: 1864 View catalog record