Folsom Valley Railway

It is the only 12 inch gauge railroad remaining in the United States operating two scale authentic miniature steam engines on a 4/5 mile of track.  https://folsomvalleyrailway.com

The Cricket is a 12 inch oil fired narrow gauge. 4-4-0 American class locomotive it was built in 1950 by Erich Thompson in the Berkeley Hills, California. 3001 is a heavy Atlantic 4-4-2 oil firer locomotive,weighs 4,000 pounds, is 16 feet long and has 16-inch drivers

'3001' was built in Sacramento by Alan Shelly completed in 1949.