Regarding wooden bodies, the most comprehensive manual I could find is FISHER BODY SERVICE MANUAL 1926-1932 ALL CLOSED BODY G.M. CARS which is available new but has no drawings or sketches with dimensions but a lot of photographs. The other used manual I have is BODY SERVICE COURSE 1930 by Chevrolet. This is a 5-day in class body service and repair course. There is a lot more material available for the Model T. There maybe a websites by individuals who documented in detail a Fisher bodied restoration or youtube.
Gals and Gents, I'm still looking for close to 1930 Plymouth, DeSoto, Chrysler, Dodge, Ford, Chevrolet etc. convertible top iron parts, pictures, scale drawings, contacts etc. I know a lot of you are frequenting car shows swap meets etc.