1894. Sanborn Map Company. Irwin, Westmoreland Co., Pennsylavnia, May, 1894. 1 map on 7 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
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1899. Sanborn Map Company. Irwin, Westmoreland Co., Pa., Sept., 1899. 1 map on 6 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1904. Sanborn Map Company. Irwin, Westmoreland Co., Pennsylvania, July 1904. 1 map on 6 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1909. Sanborn Map Company. Irwin, Westmoreland Co., Pennsylvania, September 1909. 1 map on 6 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1919. Sanborn Map Company. Irwin, including North, East and West Irwin, Westmoreland County, Pennsylvania, Nov. 1919. 1 map on 12 sheets : col. ; sheets 65 x 54 cm. Scale ap... Sanborn Map Company.
1925. Sanborn Map Company. Irwin, Westmoreland County, Pennsylvania, August 1925. 1 map on 12 sheets : color ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1886. Sanborn Map Company. Jamestown, Pa., June 1886. 1 map : col. ; on sheet 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1895. Sanborn Map Company. Jamestown, Mercer Co., Pa., May 1895. 1 map on 2 sheets : col. ; on sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1900. Sanborn Map Company. Jamestown, Mercer Co., Pa., Jany. 1900. 1 map on 2 sheets : col. ; on sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1906. Sanborn Map Company. Jamestown, Mercer Co., Pennsylvania, May 1906. 1 map on 4 sheets : col. ; on sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.