Here is a prime example. This 65' mill gondola is still carrying its Penn Central reporting marks and paint scheme in 2011, despite the fact that PC became part of Conrail in 1976! That it still has paint left after 35+ years of service is amazing; you can still see the faded PC logo on the side(beside the tree).
All of the gondolas in this string of cars were in Maintenance Of Way service; this one had a Caterpillar excavator in it, probably with a claw attached to the end of its arm for picking up old ties along the right of way.
Another old car I found in Montview Yard recently was this ex-Chicago North Western grain hopper; now with DSRC reporting marks, yellow conspicuity stripes along the sides, and rust coming down from the roof. The car next to it shows what the railroads have to do when graffiticovers the sides of their cars -they have to cover it up with a coat of paint along the bottom half.
The ex-BNSF SD40-2 locomotive that was working in Montview Yard has since been replaced by this ex-Union Pacific SD40-2. This unit has been repainted in CEFX's lease-fleet scheme, and can be identified as an ex-UP unit by the "can" mounted to the front handrail stanchion to hold the MU hose end when not connected to another unit. The MU (Multiple-Unit) hose is what allows multiple engines to be controlled from the lead unit; this is one of the advantages that helped diesels to take over from steam locomotives during the 1950's. 