industrial mining rr catalog

I am a regular lurker and sometimes poster here, and have followed the unfolding drama closely for several months.
I went to the huge flea market at Sumpter Oregon last weekend, and really enjoyed the echoeing steam whistles bouncing around the valley! I found an incredible catalog of mining rr equipment there, from the 30's. I make my living selling on eBay and wonder if it is OK to put a link here to the ad for this catalog?
I'm a Northern Pacific fan myself and have a decent website of selected photos from my more than 3000 negative collection, so if you don't mind standard gauge, take a look!