Now showing items 98-117 of 1653

    • AlleghenyCounty.gdb 

      Gorr, Wilpen; Kurland, Kristen (2013-07-04)
    • Annapolis 1904 

      U.S. Geological Survey (1913)
      1904 edition reprinted July, 1913.
    • Annapolis 1941 

      Unknown author (Washington: War Dept., Corps. of Engineers, U.S. Army, 1941)
    • Annapolis Quadrangle 

      U.S. Geological Survey (1989)
      This series of orthophoto quadrangles covers the Chesapeake Bay area of Maryland, including the tidal reaches of the major bay tributaries. The source documents were produced by the U.S. Geological Survey from 1988-1989 ...
    • Anne Arundel County Index 1938 

      U.S. Agriculture Stabilization and Conservation Service (ASCS) (Washington: U.S. Agriculture Stabilization and Conservation Service, 1938)
      Scale ca. 1:20,000
    • Anne Arundel County Index 1952 

      Unknown author (Washington: U.S. Agricultural Stabilization and Conservation Service (ASCS), 1952)
      Scale ca. 1:20,000
    • [Anne Arundel County] Well-location map 

      Andreasen, D.C. (Baltimore: Maryland Geological Survey, 2002)
      This map is Plate 1 from Andreasen, D.C., “Hydrogeology, Water Quality and Water-Supply Potential of the Aquifer and Magothy Aquifers in Southern Anne Arundel County, Maryland”. Baltimore: Maryland Geological Survey, 2003 ...
    • Approaches to Baltimore Harbor 

      McKay, H. Kent (Washington: Coast and Geodetic Survey, 1905)
      Reproduced by Harbor Board of Baltimore, H.Kent McCay, Harbor Engineer. 1 map ; 66 x 64 cm.
    • Approaches to Baltimore Harbor Aerial Photos 

      Aero Services Corp. (Baltimore District Engineer, 1948)
      Aerial Photography 1948 and Controlled Mosaic, 1949 Prepared for the District Engineer, Baltimore, Maryland, By Aero Services Corp., Photographic Engineers, Philadelphia, PA.
    • Approximate Transmissivity of the Piney Point Aquifer 

      Williams, J.F. (Baltimore: Maryland Geological Survey, 1979)
      This map is Plate 5 from Crowley, W.P., “Simulated Changes in Water Level in the Piney Point Aquifer in Maryland”. Baltimore: Maryland Geological Survey, 1979 (Report of Investigations No. 31).
    • Approximate Water-level Change in the Piney Point Aquifer between 1952 and 1976 

      Williams, J.F. (Baltimore: Maryland Geological Survey, 1979)
      This map is Plate 4 from Crowley, W.P., “Simulated Changes in Water Level in the Piney Point Aquifer in Maryland”. Baltimore: Maryland Geological Survey, 1979 (Report of Investigations No. 31).
    • Areal Distribution and Lines of Outercrop of the Georges Creek and Upper Potomac Basins 

      Maryland Geological Survey (Baltimore: Maryland Geological Survey, 1922)
      Scale 1:62,500. Map is from Maryland Geological Survey, 1922; Volume 11, Plate 5. Size of original printed map height 9.75 inches, width 55.5 inches.
    • Assawoman Bay Quadrangle 

      U.S. Geological Survey (1989)
      This series of orthophoto quadrangles covers the Chesapeake Bay area of Maryland, including the tidal reaches of the major bay tributaries. The source documents were produced by the U.S. Geological Survey from 1988-1989 ...
    • Baltimore 

      Unknown author (New York: Ensign, Bridgman & Fanning, 1855)
      This map is from book titled: "The World, Geographical, Historical, and Statistical..." by Charles C. Savage, 1855. 1 map ; 12 x 21 cm
    • Baltimore 

      Weller, E. (London: Longmans & Co., 1864)
      1 map : colored ; 20 x 12 cm. Scale: 1:37,400
    • Baltimore 

      Boyton, G.W. (Boston: T.G. Bradford, 1838)
      1 map : colored ; 29 x 36 cm. Scale in feet [ca. 1:25,000]
    • Baltimore 

      Gray, O.W. (Philadelphia: M.R. Brown, 1886)
      1 map : colored ; 38 x 32 cm, on sheet 44 x 36 cm. Scale: 1:25,500
    • Baltimore 

      Unknown author (New York : Hunt & Eaton, 1893)
      1 map : colored ; 24 x 29 cm, on sheet 30 x 36 cm. Scale: 1:29,400
    • Baltimore 

      Gray, O. W. (Philadelphia: O. W. Gray, 1875)
      1 map : colored ; 29 x 36 cm. Scale: 1:23,000