Some news on these.
I heard from the friend of mine and Dennis's who first gave me the booklet and he confirmed that they were originally designed for TSR's Buck Rogers role playing game. They were never finalized and put into production, probably due to the shake-ups happening at TSR at the time.
And on the Star Frontiers: Alive and Well group on Facebook, Matthew Teets shared this Star Frontiers Skimmer that he purchased years ago. It's obviously designed by Dennis Kauth as well. Matthew has promised to scan this for me and with his permission I'll share it.
There are pretty large resolution images of the Buck Rogers vehicles on my blog. Make sure to open the linked images to get the largest size. I'm trying to figure out some way of removing the screen pattern over the images so that I can better color them but it's frustratingly not working for me.
