How do you want them?
Green, fleshed, dried, tanned?
Where are you located?
Contact state trapping org and get local contacts unless you want them tanned. Even then, you may be ahead to buy local/ dried then have tanned yourself. Again, can recommend tannery, but general locale would help.
Fur prices are LOW, do you may fing willing sellers.
Haven't had much luck DIY tanning larger beaver.
Small ones come out OK.
Getting ready to get after them myself soon.