Original Allis Chalmers D17 dealer Parts Catalog. This is Form D-44 and is dated Nov 1957--this was the first year of the D17. it also includes a 12 page supplement dated Nov 1958. this is in good used shape, the cover shows some wear from use, the pages look good. there is some smudge marks and writing on the pages-mostly it looks like supersede part numbers and notes from the dealer on ordering items. 136 pages of very useful information.