I have more that I will need find in my collection and scan in for: Tooele Valley RR Ogden Shops (this is actually the SPMW Southern PAcific) Central Pacific and some others
OSL (Oregon Shortline) This is owned by the UP the photo is of a heavy crane, If you look above the numbers you will see the reporting marks OSL underneath the Union Pacific.
CSX Holy cow. I just realized this thread is 32 pages long. I'm betting somebody beat me to this. Oh well.