16 detailed maps showing just about every area from San Francisco circa 1920’s. The large loose map probably was not part of the book originally. A great historical reference guide… RARE 1920-29 SAN FRANCISCO CALIFORNIA Building ZONE/16 MAPSUnique Ephemera. This item is in the category “Collectibles\Historical Memorabilia\Cities & Towns”. The seller is “pinkbikinigirl21″ and is located in this country: US. This item can be shipped to United States.