For sale here is the Case/IH Grain Headers for Combines Parts Catalog, 810/820 Grain Heads. (Revision No. 11) Issued 11-'86. Book No. GH-1. Catalog is in well used, but pretty good condition. Pages are covered with fingerprint/hand smudges, edges are worn and fraying, some ink handwriting inside, but all very readable and usable. Major section Index includes: Feeders, 810 Draper Header, 810 Headers and 820 Headers.