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This collection (known internally at Maryland Geological Survey as Component 5) consists of 4,720 items – 4,715 black-and-white aerial photographs (4,688 unique frames plus 27 duplicates) and 5 associated index maps. The aerial photographs were flown or acquired by the U.S. Geological Survey (USGS) and organized on a 7.5-minute quadrangle basis. The photographs are black-and-white and approximately 9 in. x 9 in. in size. The scale of the aerial photography varies but ranges from approximately 1:12,000 to 1:35,400. These photographs date from 1936-1991 and were donated to the Maryland Geological Survey (MGS). The index maps serve as a finding aid for several of the flight series flown over five quadrangles...


    map background search result map search result map Quad-Based Aerial Photographs, 1936-1991 Maine Geological Survey Field Photos Collection Maine Geological Survey Field Photos - Dr. Joseph T. Kelley Collection Quad-Based Aerial Photographs, 1936-1991 Maine Geological Survey Field Photos Collection Maine Geological Survey Field Photos - Dr. Joseph T. Kelley Collection