Market Street Railway - A non-profit support group for the San Francisco Municipal Railway's historic transit fleet. - http://www.streetcar.org
Fort Point and Presidio Historical Association - Historical preservation and education nonprofit association for the Presidio of San Francisco National Historic District, which is a former military post. Membership information and background on pending issues. - http://www.presidioassociation.org/
San Francisco Historical Society - A non-profit organization that preserves, interprets and presents the historical heritage of San Francisco. - http://www.sfhistory.org
San Francisco History Association - A non-profit organization dedicated to remembering our San Francisco's colorful past. - http://www.sanfranciscohistory.org