I would like to locate or download a manual for my S&W 357 Highway Patrolman. I inherited it at my father's death. I think it is from around the mid '50s era. It does not have a model number stamped inside the cylinder/ejector cavity. I have the following info.

Hand ejector
S/N s 1296XX
357 Mag ctg Highway Patrolman
6" Barrel
Adjustable Sights

Thank you,