This signal lamp was used on the San Joaquin & Eastern RR (SJ&ERR) which was built during construction of Pacific Light & Power's Big Creek hydroelectric project. It has four, approx four-inch diameter lenses, two red and two blue (cyan). The intact burner lifts out through the top when the chimney is hinged to the side. The lamp appears to have all of its original parts in good condition. The top of the chimney reads // THE / NON SWEATING / ADLAKE / LAMP / CHICAGO //. Author William B. Friedricks, writing in 1987, in "Henry E. Huntington and Metropolitan Entrepreneurship in Southern California, 1898[x=#8211/]1917" says that construction of the railroad began on February 5, 1912. The railroad had 43 bridges and hundreds of grades as steep as 5.2 percent. The SJ&ERR was nicknamed the "Slow, Jerky & Expensive." Completed in July 1912, the steep grades and sharp curves required the use of geared Shay locomotives from the Ohio Lima Locomotive Works.Date: Country (if not USA): State: CaliforniaCity: Provenance: