Historic Building Survey plaque: "36 The Spencer Ogden Building, 1874. This is the oldest structure in the Gaslamp Quarter to be owned continuously by the same family. In 1881, Spencer and Ogden purchased the building from Charles de Leval, and it remained with the Ogden family. The second floor was added in 1885, and the original ironwork of this French Renaissance-style building was replaced with newer material. One of the early tenants was a dentist who attempted to make fireworks and blew away part of the second floor in 1887."