Hi Jerry,
That's very interesting! Thanks for sharing. It's odd to think that the Corps repainted some cabooses/equipment in the darker black or olive drab, and yet other cars, like 911, apparently were kept in the traditional red.
As a recent convert to modeling/researching the WP&YR, I've only begun to make my list of "hot spots" to visit on upcoming railfaning adventures, but the SVRy is certainly high up the list! When I make it to Oregon, I'd love to take you up on your offer. Cheers!
Thanks,
Josh