Oregon Geospatial Data Clearinghouse
The Spatial Data Library is a complete alphabetical listing of theme datasets available for download. The library provides information on theme name, source and resolution, EOO size, shapefiles, graphics and metadata. 

OSU Libraries' Oregon DOQ Page
This site provides users with the ability to search for Digital Orthophoto Quadrangles (DOQ) of Oregon.

University of Oregon Libraries' Oregon DOQ Page
This site provides hotlinks to Digital Orthophoto Quadrangles for Oregon.

Benton County Orthophotos
This site includes orthoimagery for Benton County.

DOGAMI Lidar Publications
This site supplies Lidar data and imagery that has been released in Oregon.

Tillamook County Spatial Clearinghouse
This site includes aerial imagery for Tillamook County, including ortho imagery for Tillamook Basin from 1965-1996 and orthoimagery quads from 1996 and 2000.

Virtual Oregon Natural Resources Spatial Data Clearinghouse
This site emphasizes natural resources data covering Oregon and the Pacific Northwest. However, in addition to natural resources data, you will also find metadata for complementary data sets such as boundaries and land ownership.

geodata.gov, also known as the Geospatial One-Stop (GOS)
geodata.gov is a geographic information system (GIS) portal that serves as a public gateway for improving access to geospatial information and data under the Geospatial One-Stop E-Government initiative. Geospatial One-Stop is one of 24 E-Government initiatives sponsored by the Federal Office of Management and Budget (OMB) to enhance government efficiency and to improve citizen services.

National Geospatial Data Clearinghouse
The Geospatial Data Clearinghouse is a collection of over 250 spatial data servers located worldwide. 

The National Map
The National Map is a collaborative effort among the USGS and other Federal, State, and local partners to improve and deliver topographic information for the Nation. The geographic information available from The National Map includes orthoimagery (aerial photographs), elevation, geographic names, hydrography, boundaries, transportation, structures, and land cover.