City And County Of San Francisco, David Rumsey Map CollectionCopyright 2010, Cartography Associates. Some Rights Reserved.Creative CommonsThis detail from an 1861 map of San Francisco shows that Buchanan Street had its current name in the early 1860s. 530 Buchanan StreetEra: 1860sPlaces: Buchanan StreetSites: San FranciscoDavid Rumsey Map Collection