Google Search for dot.gov photo sites
Use Flickr to search for Create Commons Licensed Photos
(use "Any License" pull-down menu on left to choose license type - explained here)
Oregon Scenic Images and Landscape Photos
Oregon State Archives – may be used with permission
DAS STATE Image Stock Library
Archived in the Wayback Engine. A wide selection of small images.
Oregon Fish and Wildlife Photos and Videos
Travel Oregon Stock Photos
May be used by state agencies with registration. Also includes videos.
ODOT History Center Historical Photographs
Roads, bridges, construction equipment and more.