I have a friend who owns a set of books that were created by the staff at the Harrahs Automobile museum. These books were used for research and cover most North American cars and trucks from about 1900 to 1935. These are quite detailed with pictures and notes giving everything from engine options, type of transmissions and rear ends, accessories, vehicle specifications right down to the proper jack. There are 7 volumes I would guess about 2000 pages in total. They are all in black and white paper size 11x14. I think these are the only ones known, has anyone else heard of these? My friend said he would lend them to me so that I can make a copy for my self. I expect it might be pricy what would be the interest be if I were have a few copies printed?