I happen to have 3 of the Book of Instruction LINCOLN MOTOR CARS, 5TH Edition APRIL 1925 (6 x 9). Two of which I would be willing to sell. Contact me at bwybenga@gmail.com
There is a LINCOLN SERVICE book too (8 1/2 x 11) which has much the same material in it but in a little more detail. The Service bulletins reproduced by the club have the same material in them but not as organized in complete chapters covering a given topic.