If you live anywhere close to the Quad-Cities, Moline, etc., I'd get hold of Stenzel Auction Service, they can appraise that stuff.
The three brothers that started the company were all advisors to my 4-H club, and auctioned on the side. Their Day Job they were all supervisors at Deere plants. Their kids now run the auction company.
If you live far from the Quad-Cities, they can probably recommend someone else.
Thank you for your help, everyone!! All of the equipment is in Pennsylvania currently (though I am in IL) and I am trying to get as much research done remotely as I can. I welcome any and all help I can get identifying what this stuff is/ what it could be worth. I realize it's difficult without serial numbers and such.
If anyone else has any knowledge about any of this stuff, please let me know! Also, if any of it looks appealing to anyone or you know anyone who is looking for any of it, let me know that, too! Thanks! (: