Stag horn!

[Nighthawk]

All the above. There are many, many antler suppliers. The more you buy, the cheaper it is.

Search e-bay for "antler" = many hits!

Seartch google for "antler" and "knife making supplies" = many, many, many hits!

Talk to your hunting friends. Talk to local game wardens. Talk to local taxidermists. Talk to store clerks where they sell hunting supplies. Try Craigs list. Post a card in hunting stores. etc. etc. etc.

I didn't think to search for antlers... I've been searching for elk horn, stag horn, knife making, etc, and haven't found anything other than scales with those search terms. I was just using the wrong word... Thanks, folks!!