1991. Metro Data Resource Center. This polygon data layer represents vegetation coverage for Portland Metro, Oregon in 1991. The dataset was originally published by the Metro Data R...
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2000. Metro Data Resource Center. This polygon data layer represents voter precincts for Portland Metro, Oregon in 2000. The dataset was originally published by the Metro Data Resou...
1855. J.H. Colton & Co. Relief shown by hachures.; "Number 53."; Includes some tribal names and longitudes from both Greenwich and Washington (D.C.).; Includes Tillamook a... Published by J.H. Colton & Co (New York).
2001. Metro Data Resource Center. This polygon data layer represents water districts for Portland Metro, Oregon in 2001. The dataset was originally published by the Metro Data Resou...
1999. Metro Data Resource Center. This polygon data layer represents watersheds for Portland Metro, Oregon in 1999. The dataset was originally published by the Metro Data Resource C...
1915. United States. Forest Service. Relief shown by hachures and spot heights.; "Willamette meridian."; Public land (township, range, and section) grid.; Shows alienated land within t... The Service (Washington, D.C).
1994. Metro Data Resource Center. This polygon data layer represents zip codes for Portland Metro, Oregon in 1994. The dataset was originally published by the Metro Data Resource Ce...
2001. Metro Data Resource Center. This polygon data layer represents zoning for Portland Metro, Oregon in 2001. The dataset was originally published by the Metro Data Resource Cente...