The Society for the Preservation of Carter Railroad Resources (SPCRR), is a 501(c)(3) nonprofit dedicated to the preservation of local Northern California railroad artifacts, specifically those built by the Carter Brothers Builders in Newark, California.

Since 1985, volunteers at SPCRR have provided Victorian period- and locale-accurate narrow gauge train rides for guests at the Ardenwood Historic Farm interpretive history park in Fremont, CA. Our museum focuses on the preservation and demonstration of turn of the century railroad operations and equipment in the Bay Area. For many years, this centered around the operation of a horse-drawn flatcar ride for guests of the park. This unique operation mimicked a real branchline of the South Pacific Coast Railroad in Centerville, 2 miles south of the current park, where horses pulled 2-3 cars to the mainline interchange.