Driveshaft identification

Do you guy know of a website or anywhere online I can find the specs and measurements on driveshafts for 60's & 70's Mopar stuff. Reason I ask is a local Mopar guy just passed away and his family called me, they needed to move everything he had so I bought all they had, and I've probably got 50-60 driveshafts, and of course nothing is labeled . Just trying to figure out what some of this stuff is so I can list it. Thanks for any help, mods if this is in the wrong place please move it. Thanks