Photograph of storefront of Jewel City Plumbing Company, Southern California, 1928. "Jewel City Plumbing Co." -- sign on window. "Hot Water! The Hoyt, ...'the difference is on the [ilg]; Hoyt Auto[matic] [Wate]r Hea[t]er; ask about our convenient terms, Hoyt Automatic Water Heaters; ask about our convenient terms, Hoyt Automatic Water Heaters; [ilg]ter Heaters; Water! The Hoyt Way; Fly Your [ilg]" -- signage in display window. "Hoyt, Hoyt Heater Co.; Hoyt, Storage Automatic Gas Water Heater, Hoyt Heater Company" -- signage on heaters. "526" -- address on window.