2010. National Geophysical Data Center. This line shapefile shows lines of equal vertical intensity of the Earth's magnetic field, derived from the International Geomagnetic Reference Fie... National Atlas of the United States.
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1999. Geological Survey (U.S.). This line shapefile portrays the major roads in the United States, Puerto Rico, and the U.S. Virgin Islands. The file was produced by joining the i... Geological Survey (U.S.).
1916. United States. Forest Service. Willamette meridian.; Relief shown by hachures.; Text about public information, rules and a table of distances on verso. 56 x 54 centimeters No sca... U.S. Forest Service (Portland).
54. Map of Oregon
1910. Oregon Railway and Navigation Company. Shows railroads, trails, forest reserves, Indian reservations, and national parks. Includes index.; Verso: Descriptive and travel information. 63 x... The Company (Portland).
2004. National Atlas of the United States. This polygon shapefile portrays county level data for the fiscal-year-2004 National Fire Plan - Hazardous Fuels Reduction Program. The purpose of t... National Atlas of the United States.
1972. National Atlas of the United States. This polygon shapefile contains National Wilderness Preservation System areas of 640 acres or more, in the United States, Puerto Rico, and the U.S.... National Atlas of the United States.
2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Canada Centre for Mapping, and Geological Survey (U.S.). This polygon shapefile contains bathymetric data with depth in metres for ocean areas covered by the extent of the North American Atlas project. Is... Canada Centre for Mapping.
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.
1909. Cram, George Franklin, 1841-1928. Relief shown by hachures.; Shows townships, lands for sale by the Company, etc. 63 x 87 centimeters Scale approximately 1:750,000 General Map Colle... George F. Cram (Chicago, Ill), 1909.
1925. Pittmon, Armena. Includes indexes.; Includes 2 ancillary maps on verso.; Includes advertisements on both sides of the sheet. 48 x 57 Centimeters on sheet 53 x 70 Ce... Armena Portland (Portland, Or), 1925.