High Quality Content by WIKIPEDIA articles! The Redstone Building, also known as the Redstone Labor Temple, was formerly called "The San Francisco Labor Temple" was constructed and operated by the San Francisco Labor Council Hall Associates. Initial planning started in 1910, with most construction work done during 1914. Its primary tenant was the San Francisco Labor Council, including 22 labor union offices as well as meeting halls. The building was a hub of union organizing, work activities and a "primary center for the city`s historic labor community for over half a century."