Lone Wolf - not many kids in my neighborhood had one of the big sets either, but one friend of mine had the big Revell set with the banked turn sold by Sears in the late 60s. It was a real treat for me to race on that set.
Ricky Vegas - I agree about the old catalogs. I have a Revell catalog from roughly the same time frame. Some of the layouts were very creative. I believe Robert Schleicher designed the Revell set layouts.
I wonder if your buddy's dad picked up those sets at a deep discount from stores clearing their inventory. I have two Strombecker 1/24 kits still in the original boxes and packaging. One of them has three price stickers starting at $5.97 ending at $1.88.
If there is a way to post larger files here, I will scan the Revell catalog and post it.