From what I understand, the wonderful and all consuming Union Pacific Railroad and their legal eagles are making calendar producers pay for every image they use of any UP or predecessor road's equipment, logos, etc. Of course, this includes the Rio Grande. You can't even do an all RGS calendar because they used the D&RGW's cars. This has become cost prohibitive for the publishers and they have had to eliminate the calendars since they didn't make enough profit on them to pay the legal fees.
Now, when I was growing up, it seems to me that public exposure of a corporate logo was called "adverstising" and the owner of the logo had to pay the publisher for advertising their product. Or, they classified non paid corporate logo exposure as free advertising. Now everything is upside down.
So, for the first time in about 20 years I won't have a Narrow Gauge Calendar on my wall at work. Thanks UP.