MAFCA website has some good info on Model A Instruction Books.
There were at least 13 different versions of the Ford Model A Instruction Book published for US-built cars and trucks: 5 in 1928, 2 in 1929, 4 in 1930, and 2 in 1931. The following paragraphs outline the differences in the manuals so that owners of Model A Fords looking for a manual that matches the production date of their vehicles can identify which version might have been supplied with the vehicle when new.
The first and easiest way to identify the manuals is to look for the copyright date, which was always printed on the first or second page of the manual (although the first 4-5 pages were unnumbered.) Once you have identified the correct year, the version can be ascertained by noting the pictures in the manuals.
Consult the MAFCA/MARC Restoration Guidelines and Judging Standards, Area 17 - Tools, for additional information.
http://mafca.com/tqa_instructionbooks.html