CLSA
San Francisco
CRIIS - recorded documents
San Francisco Subdivisions and Mapping Homepage
SFDPW Mon-u-mental viewer - monuments and statuses
SF Property Information Map - planning applications, building permits, and more
SF History Center Building Research - block books and more
SF Historical Photo Collection
Clerk of Board of Supervisors Information Request - resolutions, dedications, vacations
David Rumsey Historical Map Collection - many historical maps and images