1904. Sanborn Map Company. Bethlehem, Pa. [1904]. 1 map on 35 sheets : col. ; sheets each 65 x 54 cm. + 1 title sheet with index and 1 map index sheet. Scale approximately 1... Sanborn Map Company.
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1917. Sanborn Map Company. Bethlehem, Pa., 1917, additional maps. 5 maps : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1919. Sanborn Map Company. Bethlehem, Pa., 1919, additional maps. 5 maps : col. ; sheets 65 x 54 cm. + key map. Scale approximately 1:600. 50 ft. to an in. unless otherwise ... Sanborn Map Company.
1922. Sanborn Map Company. Bethlehem, Pa., 1922, additional map. 1 map : col. ; 65 x 54 cm. Scale approximately 1:1,200. 100 ft. to an in. Sanborn Map Company.
1910. Sanborn Map Company. Big Run, Pa. [1910]. 1 map on 3 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1912. Sanborn Map Company. Birdsboro, Pa. [1912]. 1 map on 7 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1927. Sanborn Map Company. Birdsboro, Berks County, Pennsylvania, December 1927. 1 map on 12 sheets : color ; sheets 65 x 54 cm. Scale not noted. Sanborn Map Company.
1909. Sanborn Map Company. Black Lick, Pa. [1909]. 1 map on 2 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1927. Sanborn Map Company. Black Lick, Indiana County, Pennsylvania, April 1927. 1 map on 3 sheets : color ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
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.