2003. United States. Environmental Protection Agency. This polygon shapefile shows Omernik's Level III ecoregions, derived from a 1:7,500,000 map created by J.M. Omernik in 1987 and from refinements of... National Atlas of the United States.
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1894. Sanborn Map Company. Orbisonia, Huntingdon Co., Penn., Sep. 1894. 1 map on 3 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1904. Sanborn Map Company. Orbisonia, Huntingdon County, Pennsylvania, September 1904. 1 map on 3 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1911. Sanborn Map Company. Orbisonia, Huntingdon County, Pennsylvania, September 1911. 1 map on 3 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1927. Sanborn Map Company. Osborne, Allegheny County, Pennsylvania, January 1927 : R.R. Station, Glen Osborne, including Haysville. 1 map on 2 sheets : color ; sheets 65 x 54... Sanborn Map Company.
1892. Sanborn Map Company. Osceola Mills, Centre Co., Pa., Apr. 1892. 1 map on 2 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1905. Sanborn Map Company. Osceola Mills, Clearfield County, Pennsylvania, October 1904. 1 map on 7 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to a... Sanborn Map Company.
1910. Sanborn Map Company. Osceola Mills, Clearfield County, Pennsylvania, March 1910. 1 map on 7 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1922. Sanborn Map Company. Osceola Mills, Clearfield County, Pennsylvania, Nov. 1921. 1 map on 16 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1886. Sanborn Map Company. Oxford, Pa., Mar. 1886. 1 map : col. ; sheet 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.