Hi Dennis,
I have the Ivan Collins (Historic Vehicle in Miniature) book where there are some SMALL (7.5 x 6 inches) plans which may enlarge, there are 3 in the plans, (general, how to make the bowed in 2 directions sides, and general details (I think there should be more in the set) which go into some detail which is necessarily small.
Thereare also color views of his models, the book is quite good, with a small number of plans in the back of it; it is mainly a photo, and description of the model illustrated book, with a few tips at the end. My copy is about 1980 oe so, and the photos are as shown in the website that Steve C has mentioned.