Main St. And Plaza was Mosbls (?) and Pico House Groen Hill. Abt. 1869. C.C PIERCE. PHOTOGRAPHER 1572 W. PICO ST. LOS ANGELES, CAL. U.S.A. Used in L.A. Historical Review 10/29. PROPERTY OF LOS ANGELES HISTORICAL SOCIETY. Plaza was still oblong in 1869. See J. Gregg Layne copy Neg # A241, Main St. and Plaza
