Central Pacific Railroad steam locomotive No. 1536 was outshopped in April of 1868 by McKay & Aldus as CP No. 68 "Peoquop." It was rebuilt in December of 1891 with a new H. J. Small-designed standard boiler and other improvements. In 1901 it was renumbered 2001. The 4-6-0 locomotive was scrapped September 26, 1933 at the Brooklyn yards. This photograph was taken in Tracy.