1980. Struble, Richard A. Title assigned by cataloguer. prepared ... by Richard A. Struble and David A. Hodges. "Areal density of photo linears occurring within a 5000 meter... Ohio. Division of Geological Survey.
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1980. Struble, Richard A. Base map: USGS Cleveland, Ohio; Pa., U.S., Ont., Can. (4th ed. 1972 rev.) "Areal density of photo linears occurring within a 5000 meter square grid... Ohio. Division of Geological Survey.
1980. Struble, Richard A. Title assigned by cataloguer. prepared ... by Richard A. Struble and David A. Hodges. "Areal density of photo linears occurring within a 5000 meter... Ohio. Division of Geological Survey.
1980. Struble, Richard A. Base map: USGS Cleveland, Ohio; Pa., U.S., Ont., Can. (4th ed. 1972 rev.) "Areal density of photo linears occurring within a 5000 meter square grid... Ohio. Division of Geological Survey.
1912. Sanborn Map Company. Picture Rocks, Lycoming County, Pennsylvania, August 1912. 1 map on 3 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1928. Sanborn Map Company. Picture Rocks, Lycoming County, Pennsylvania, July 1928. 1 map on 3 sheets : color ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1891. Sanborn Map Company. Pine Grove, Schuylkill Co., Penna., June 1891. 1 map : col. ; sheet 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1896. Sanborn Map Company. Pine Grove, Schuylkill Co., Penna., April 1896. 1 map : col. ; sheet 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1902. Sanborn Map Company. Pine Grove, Schuylkill Co., Pennsylvania, December 1902. 1 map on 2 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1912. Sanborn Map Company. Pine Grove, Schuylkill County, Pennsylvania, December 1911. 1 map on 3 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.