Chris is an acclaimed author, activist and founder of the Critical Mass bicycling movement in San Francisco. He is an enthusiastic radical historian, who conducts Bicycling History tours and is director of Shaping San Francisco.

His books include:

Reclaiming San Francisco: History, Politics, Culture: History, Politics and Culture – A City Lights Anthology (edited with James Brook and Nancy J. Peters, 1998).

Critical Mass: Bicycling’s Defiant Celebration (editor, 2003)

Nowtopia: How Pirate Programmers, Outlaw Bicyclists and Vacant-lot Gardeners are Inventing the Future Today (2008)

Ten Years that Shook the City: San Francisco 1968-1978 (editor, 2011)


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