I found this on the NRA link to Hunters for the Hungry:
https://hfth.nra.org/get-involved/
I typed in within 200 miles of Casper, WY and found several drop-off sites available in the 150 mile range.
"What you need to know before you donate:
Game must be legally harvested
All game must be field dressed
Each state has different rules and regulations for donations, please check with your local drop off location prior..."