One block E of Memory and Bancroft Dr, Spring Valley,
CA ,
USA
California State Historical Marker
Adobe built about 1863 by A. S. Ensworth. Home of Capt. Rufus K. Porter and family. Curved timbers brought from the Clarissa Andrews, famed coaling hulk formerly of the Pacific Mail Steamship Co. Historian Hubert Howe Bancroft later owned this estate and here wrote a part of his monumental History of California.