This building, including the carriage house, is located at 3900 Broadway, Oakland, CA... designed by the famous woman architect Julia Morgan. The old sign still stands on Broadway (near MacArthur) but it is now owned by Kaiser Hospital. It houses some of their psychiatry staff, as far as I know. Inside the front lobby are some of the historic facts about the building itself. I don't know who has the records, but I would start with Kaiser and they could probably tell you.