Historic Structures Report for Girton Hall, the former Senior Women's Hall on the campus of the University of California Berkeley (UCB). The primary purpose for this HSR is to document the history of the subject property, identify historic building significance and make treatment recommendation, all in order to provide and disseminate such information to those responsible for future projects that would affect the future property. Girton Hall was designed and constructed in 1911 to provide a meeting and social hall dedicated to women students and their activities. It served those purposes, in a waning capacity, between 1911 and 1969, when the building was repurposed for child care. The structure was designed by Architect Julia Morgan (1872-1957) in the early period of her architectural career. Throughout her career, Morgan produced important architecture in the Bay Area and Northern California. Amougst her most seminal works are the Hearst Castle in San Simeon (1919-1947), the Asilomar Center in Pacific Grove (1913) and the Berkeley Women's City Club (1929).