I just Googled WB Video, and a web page came up, with contact information for WB Video in Texas. The film "Rails Across the Summit" is in the catalog as a VHS tape only; some of the others are available both as VHS tapes and as DVD's - including "Excursion to the Thirties,' the Jackson films of the Colorado narrow gauges. I'm going to order a copy of the VHS tape - will let you know if I get a "sorry we're closed" message.
I really enjoyed "Rails Across The Summit," and can attest to the fact that it appeared on Washington state PBS stations several times. I will be glad to have a copy for my video library. Excellent photography, and a wonderful look at the early operations of the C&TS.
Charlie Mutschler