Here in the U.S., everyone drives, so Amtrak closes stations, so fewer people ride. However, that might change if oil prices start rising beyond the point where cars or planes are economical, which they're supposed to in the next few decades.
*Farnhamian Guard OP Editor Squad crashes through the door*
For images of railroads, one place to visit is the Center for Railroad Photography & Art. Check out to "Collections" tab. You can search for the photographers in their collections individually. Here are just two images, the first by Wallace Abbey, the second by Katherine Botkin.