Peter M. Field was educated at San Francisco City College, San Francisco State University, and the Pacific Graduate School of Psychology. He worked as a social worker with the homeless mentally ill in San Francisco’s Haight-Ashbury, Tenderloin, and South of Market districts, in Contra Costa County’s North Richmond, and in San Mateo County. He has published articles on the history of the Tenderloin and of Maiden Lane. He leads history walks in San Francisco’s Tenderloin and Richmond districts.