Well, if no one else ...
Those scopes were made in the late 60s and 70s. They were good ones in most respects. If they are stored in hot places - like a car trunk - the range finding decal will soon peel off the glass but other than that they were ok.
Instructions - the twin horizontal stada lines are 18" apart at 100 yards. That's the "average" chest depth of white tail deer, standing ground hogs, etc. You turn the power adjust ring until those lines bracket a deer's chest and read the range on the lowest part of the decal.
Cams - ?? I don't remember any cams being available. You just have to know your trajectory and hold accordingly.
Parts - The only spare parts I remember were some replacement knobs for the adjustments. Doubt you will find any, THAT part of Redfield is long gone, only the brand name remains as a division of Meade.
American industrial management methods done by bean counters killed the original Redfield company off years ago, as they do most of the companies they gain control of. It ain't unions, or foreigners, or the gov. that kills most companies, it's their own foolish, college trained managment methods.