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Washington, DC & Vicinity Aerial Photographs, 1945-1949 This collection (known internally at Maryland Geological Survey as Component 9) consists of 1,474 black-and-white aerial photographs (1,472 unique frames plus 2 duplicates) plus 2 index maps which serve as a finding aid for the photographs in the two sub-components of this collection -- DC Collection 1 and DC Collection 2. The photographs are 9 in. by 9 in. in size and cover Washington, DC and vicinity (including portions of Maryland and Virginia). The counties in Maryland covered by these aerial photographs are Anne Arundel, Howard, Montgomery, and Prince George's Counties. No date is printed on these photographs; however, based on features shown in the photographs, Maryland Geological Survey (MGS) estimates... Categories: Data, Image, Physical Item; Types: Collection, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ndc_collection Maine Geological Survey Field Photos - Dr. Joseph T. Kelley Collection Dr. Joseph T. Kelley collection of field photographs from his career in Maine. Categories: Data, Image; Types: Collection, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Coastal, Field photos, Image, Maine, final, All tags... ndc_collection, Fewer tags High-Altitude Infrared Aerial Photographs, 1970-1974 This collection (known internally at Maryland Geological Survey as Component 7) consists of 48 high-altitude, 9 in. by 9 in. infrared aerial photographs (48 unique frames). The photographs date from 1970-1974 and were flown over ten counties in Maryland and some small portions of Virginia along the Maryland border. The counties in Maryland covered by these photographs include Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick, Harford, Howard, Montgomery, and Prince George?s Counties. The scale of these photographs is not printed on the photographs; however, Maryland Geological Survey (MGS) calculates the scale to be approximately 1:120,000 for the Series 74-039 photographs; approximately 1:140,000... Categories: Data, Image, Physical Item; Types: Collection, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ndc_collection Historical Aerial Photographs of Maryland, 1937-1990, County Collection The "Historical Aerial Photographs of Maryland, 1937-1990, County Collection" consists of black and white aerial photos (9"x9", 1:20,000-scale) from several time periods: 1937-1938, 1949, 1951-1953, 1957, 1961-1964, 1968, 1970-1972, 1979-1981, and 1983-1990. These photographs were usually flown or otherwise acquired by the U.S. Department of Agriculture (USDA), the U.S. Geological Survey (USGS), or the private firm Air Photographics, Inc. (API). USDA and USGS photographs were donated to the Maryland Geological Survey (MGS), mainly by the Maryland State Highway Administration (SHA). MGS purchased the copyrighted API photographs. Due to copyright limitations, the public may view the paper API photographs but... Categories: Data, Image, Physical Item; Types: Collection, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ndc_collection MD Barrier Island Aerial Photographs (Enlargements), 1952-1964 This collection (known internally at Maryland Geological Survey as Component 2) consists of 505 enlargements of unrectified, black-and-white aerial photographs flown along Maryland's barrier islands during 13 different time periods (or "sets") between October 1952 and July 1964. Each of the photographs in the collection is about 2 feet x 2 feet in size. Some of the photographs have a scale of 1:14,400 or 1:6,000 stamped on the front. On the backs of many of the photographs is another stamp of "1" = 200 ft". The photographs cover the Maryland section of two narrow barrier islands that lie along Maryland's Atlantic coast, separated by the Ocean City Inlet: Fenwick Island to the north and Assateague Island to the... Categories: Data, Image, Physical Item; Types: Collection, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ndc_collection Collection of mineral resources field photographs from Alaska This collection is comprised of digital, slide and print photographs taken during minerals related field projects from 1970-2020. There are approximately 35,800 photos and slides that need to be culled, documented and archived. 81% of the photos are in digital format and most need to be manually matched with their locations from geologists’ field notes, although a small percentage have locations and descriptions that could easily be archived. The remaining 19% are slide and print format that need the same attention but are in fair to good condition for scanning purposes. There are 50 videos that are also part of this collection. These photos document field sites, geologic features, landscapes and landforms from... Categories: Collection, Image, Physical Item; Types: Collection, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geological Collection, ndc_collection, photographs, slides