Consolidated Rock Products No. 1 is an 0-6-0T built by Alco in 1925 for the Reliance Rock Co. #1 at Azusa, CA.
The #1 worked as a switcher on the 3 mile standard gauge railroad connecting the quarry to a connection with the SP until it was retired from service in 1955, at the order of the Smog Control Board and was replaced by a diesel locomotive.
It was donated to the Travel Town Museum in 1958, where it is placed to this day on static display.