The purple sled is a 1967 long track, it is the first purple Viking made. My dad was president of Viking back then so we ran lots of prototype sleds View attachment 30268 . Here is a picture at Old Faithful in 1970. We left West Yellowstone in the morning and got back after dark. It seemed like the trail had 3 foot moguls. Check out the patches on the suits.
Here's mine, bustin' through the POW here is southeastern Wi. Love to do a vintage ride sometime.
Do you have a plow on that thing between the ski's?
I don't know if they still have it, but Bill & Diane Miller (They host the A-1 Vintage Show in Michigan) had a Viking sled still in the crate.