It's not too late to catch some sessions at the National Conference in Planning History taking place at the Oakland Marriott this weekend. Organized by the Society for American City and Regional Planning History, many of the panels and tours are focused on the Bay Area, as well as their Sunday tours, which include "Historical Development and Ethnic Change in Oakland," "Urban Renewal in San Francisco" and "North of the Golden Gate: Growth Control, Open Space, and Alternative Agriculture on the Urban Fringe." The Marriott is an easy two blocks from the Oakland City Center BART station.