Most years they also had a "prestige" edition that was a larger format, heavier paper, etc. Some of these were really over the top with fabric and vinyl samples. They tend to be quite a bit pricier than the normal, more often seen ones.
It seems as if Scott's brochure is targeted at the younger market from the cover, get the old fogey cars off the front of the book, you know...
And I do believe that Scott's book is in a larger format than the other one. I have the one that IE posted above, it is one of the smaller size ones.
That one has been posted at the Open Library Project...
http://library.route66rambler.com/?p=44-mike
