Index to the Oregon Historical Quarterly (REF KNIGHT F871 .O43)
Three volumes covering the Oregon Historical Quarterly from the 1900 through 1980. The fourth volume, covering 1981-2000, is available online.
Sanborn fire insurance maps.
Historic large scale maps with building detail for Oregon cities. Gresham coverage includes 1911, 1922 and 1941.
GLO maps and survey notes.
General Land Office township plat maps for the Gresham area were produced between 1855 and 1898. The Gresham site lies in two townships: T1N R3E and T2N R3E. The current boundary between these two townships is SE Stark Street.
Zimmerman Heritage Farm Master Plan (includes historical section)
Oregon Historic Sites Database.
Beta version of a database of historic sites, which may be searched by city, building style or function.
Census reports. Census data published earlier than 1990 must be found in printed reports, which are maintained in the Document Center.
Gresham Outlook (see News & Opinion section above). The Centennial issue of 9 February 2005 contains a 100-page historical section.