Dozens of efforts are underway to provide access to the history of San Francisco on the web.
Here are some of the more useful sites we've discovered (thanks to Ron Henggeler for a number of these).
Please write us with your url if you have something that should be on this list.
Primary resources:
Shaping San Francisco Talks: online archive
Shaping San Francisco upcoming Bicycle History Tours
History Pin's photo crowdsourcing project "Year of the Bay"
Shaping San Francisco channel at History Pin
Thinkwalks on foot and bike with Joel Pomerantz
David Rumsey Map collection, 1859 US Coastal Survey Map geosynchronized with Google Maps!
The Photo Archives at the History Center
San Francisco Library History Center
California Digital Newspaper Collection
San Francisco City Guides--Neighborhood historical walking tours
Maritime Museum National Park--Maritime History
San Francisco Maritime Museum - J. Porter Shaw Library
Labor Archives & Research Center, SFSU
SFSU American Poetry Archives An historic register of the past 50 years of poetry and related writing as it happened in San Francisco
Museum of the City of San Francisco (particularly the '06 quake and fire dept.)
San Francisco Museum & Historical Society
San Francisco LocalWiki history page
San Francisco Architectural Heritage
Specific Neighborhoods, Areas, or Neighborhood Historical Associations
The Uptown Tenderloin Historic District
Mt. Davidson and its Historic Neighborhoods
San Francisco and Haight-Ashbury history
The Historic Shipyard at Pier 70
Bayview History Preservation Project
California Missions: Mission Dolores
San Francisco Garden Registry: A Survey of Urban Food Production Zones
San Francisco History Association
Specific Groups
Muwekma Ohlone Tribe Information
Thomas Fleming on Black History
California's (and San Francisco's) business and management history
Curious and Entertaining Local History Sites
Using San Francisco History a fine historiographical collection of blog entries relating to San Francisco history
Burrito Justice, one of the best local bloggers, full of history and sharp insights
San Francisco History Podcasts from Sparkletack
Tramps of San Francisco: In search of San Francisco's forgotten histories
Kenneth Rexroth's San Francisco
Who's Who of "Haight Ashbury Era"
Malcolm Barker's San Francisco Memoirs
California Landmarks: San Francisco
Thomas Bachand's 360 degree animation of San Francisco in 1851
Digging in downtown SF c. 1978