Sutter Street Railway

The Sutter Street Railway was originally a horsecar line in San Francisco. In 1877 the line was converted to cable car operation. The line introduced the side grip, and lever operation, both designed by Asa Hovey.
Sutter Street Railway's grip car 46 and trailer 54 have been preserved and are displayed in the San Francisco Cable Car Museum.
Steam-powered extension.
A Russian gauge extension was built through the Marina District to the Presidio of San Francisco in 1877. Former horsecars were pulled over this line by two 0-4-0 tank locomotives built by Baldwin Locomotive Works (C/N 4121 & 4125). These steam dummy locomotives were named "Harbor View" and "Casebolt". After the extension was sold to the Presidio and Ferries Railroad in 1880, these locomotives operated as numbers 1 and 2 until the line was destroyed by the San Francisco earthquake.