Postcards at the California State Railroad Museum
I took my brother to the railroad museum in Sacramento last weekend. I've been there before - it's one of the best museums I've ever been to. They have some amazing displays and exhibits that rival the Smithsonian and the Henry Ford. They have a number of old cars you can walk through, and one of them is a mail car which probably transported millions of postcards across the country. They had few old postcards on display which didn't really have much to do with the railroad - displaying some RPO (Railway Post Office) cancels would have been better. I have a number of RPO cancels on postcards and I can't help wondering if any traveled on this car...
The image can be seen at wahooart.com who can supply you with a canvas print of it.