American; Attics; Civil War; Civil War, 1861 1865; Communications; Drawings; History; Maryland; Military Personnel; Signal Stations; Union; United States; Williamsport
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@ Library of Congress
Art Photography; Attics; Black And White Photography; Documentary Photography; Gelatin Silver Prints; Photography; Photography (Discipline); Photography Of Interiors; Stoves; Stoves, Wood
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@ University of Oregon Libraries