Just aquired three Cat Dozers and looking for help

"I’m new to the group and recently acquired three Cat dozers: a 2 Ton, a Twenty-Two, and a Diesel Forty. I’d love to restore them but am unsure if that’s feasible. I also don’t know their current value or what they might be worth once restored. Any information or advice would be greatly appreciated!"                     

Kinda depends on what your idea of "restore" is. All three tractors are fairly popular for projects now it seems and parts are not completely impossible to obtain, either new or from parts sources. They all seem to be pretty straight as far as tin and undercarriage issues.
On the other hand, they look to be good candidates for parts doners for other folks that are in need of them.
So my friend, the choice is yours. I wish, "or maybe I dont" that I lived in an area where stuff like that appears on a regular basis.
Good luck on your endeavors and if you decide to work on them please send LOTS of pictures. We all like to help.