A few shots from the California Railroad Museum, located in the capital, Sacramento.
Great exhibits, well-displayed, friendly and knowledgeable docents....but very very difficult lighting for photography. (They do allow a few special days a year for photographers, with tripods and flash allowed.) But normally it's hand-held, leaning-against-something, or monopods. Typical exposures: 1/2 second at ISO 650 or higher. Anyway, a truly great stop in Sacramento, part of the "Old Sacramento" recreation of the Gold-Rush era town next to the river.
(Sacramento was the West terminus of the cross-continent Railroad line, finished in 1869, unless I am mistaken. The other terminus was St. Louis, Missouri.)