1888. Sanborn Map Company. Scale 1:600. 50 ft. to 1 in. Sheet 1 includes symbol key, index, index map, and certification signatures. Partial cadastral map. Fire insurance map... Sanborn Map & Publishing Co.
1898. Sanborn Map Company. Scale 1:600. 50 ft. to 1 in. Sheet 1 includes symbol key, index, index map, and certification signatures. Partial cadastral map. Fire insurance map... Sanborn-Perris Map Co.
1892. Sanborn Map Company. Scale 1:600. 50 ft. to 1 in. Sheet 1 includes symbol key, index, and index map. Partial cadastral map. Fire insurance map hand colored to show buil... Sanborn-Perris Map Co.
1903. Sanborn Map Company. Scale 1:600. 50 ft. to 1 in. Sheet 1 includes symbol key, index, and index map. Partial cadastral map. Fire insurance map hand colored to show buil... Sanborn Map Company.
1910. Sanborn Map Company. Scale 1:600. 50 ft. to 1 in. Sheet 1 includes symbol key, index, and index map. Partial cadastral map. Fire insurance map hand colored to show buil... Sanborn Map Company.
1923. Sanborn Map Company. Scale ca. 1:600. Partial cadastral map. Sheet 1 includes symbol key, index, and location and index maps. Fire insurance map hand colored to show bu... Sanborn Map Company.
1892. Sanborn Map Company. Port Allegany, McKean Co., Pa., May 1892. 1 map on 3 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1897. Sanborn Map Company. Port Allegany, McKean Co., Pa., Dec. 1897. 1 map on 4 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1903. Sanborn Map Company. Port Allegany, McKean County, Pennsylvania, November 1903. 1 map on 8 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1909. Sanborn Map Company. Port Allegany, McKean County, Pennsylvania, November 1909. 1 map on 11 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.