1909. Sanborn Map Company. Insurance maps of Steelton, Dauphin County, Pennsylvania, July 1909. 1 map on 22 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ... Sanborn Map Company.
1914, 1915, 1916, 1917, and 1918. United States, Army., Engineer Regiment, 29th. prepared by G-2-C. Relief shown by contours, spot heights and form lines. Includes natural land features such as forests and rivers and man-made fe... Base Printing Plant, 29th Engineers, U.S. Army,.
1974. Somerset County Park Commission. Lord Sterling Park in Bernards Township, Somerset County, N.J. Walking boards and observation spots are indicated in color. Inset map of Bernards T...
1934. United States. Works Progress Administration of Pennsylvania. Statement of responsibility: [Works Progress Administration of Pennsylvania]. Relief on most maps shown by contours and spot heights. WPA Project N... Works Progress Administration of Pennsylvania.
1934. United States. Works Progress Administration of Pennsylvania. Statement of responsibility: [Works Progress Administration of Pennsylvania]. Relief on most maps shown by contours and spot heights. WPA Project N... Works Progress Administration of Pennsylvania.
1949. Geological Survey (U.S.). (W 88⁰45ʹ00ʺ--W 88⁰30ʹ00ʺ/N 39⁰30ʹ00ʺ--N 39⁰15ʹ00ʺ);"Culture and drainage in part compiled from aerial photographs taken 1939. Topography by plane-... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).