Historic Building Survey plaque: "6 Quin Building, 1930. In 1930, this Spanish Colonial Revival style structure was built in the heart of Chinatown for Thomas A. Quin. The top portion had two apartments, and the bottom floor was a combination storefront and storage space. Seven years after its construction, T.A. Quin passed away in one of the upstairs apartments. Thomas Quin was the son of Al Quin, Chinatown's founder and unofficial mayor. The Quin family is known as one of the most important Chinese families in San Diego's history."