Check these links out:

SHAPING San Francisco
A multimedia excavation
of the lost history of San Francisco.

Critical Mass History
A compendium of manifestos, photos and commentary from San Francisco's Critical Mass rides; the world's longest running bicycle/social extravaganza; continuous since September 1992!

CounterPULSE

Building passionate artistic community
in San Francisco and beyond, since 1991.
No one turned away for lack of funds.