IHC 523-624 Manual (Dutch manual for McCORMICK INTERNATIONAL D-322 and D-326 tractors).
IHC 322-326 Manual (Dutch manual for McCORMICK INTERNATIONAL D-322 and D-326 tractors).
IHC exact (German and English manual for the hydraulic system from McCORMICK INTERNATIONAL D series tractors).
IHC brochure 323-423 r1 323-423 r2 353 432 523 624 724.
IHC specification 275 523-624.