Brad, I go to a place called Hydroharvest which is in Eastmanville. Kind of near Muskegon. They have green frog tadpoles, leopard frog tadpoles, and bullfrog tadpoles (lots). If you'd like to go there and get some call ahead of time to make sure they have them in. I bought 35 green/leopard frog tadpoles 2 weeks ago (which was 1/2 of what they had), but they get more in. I was going to get more, but I got a terrible case of Ick from some snails I got from www.liveaquaria.com Made me soooo angry! My indoor aquarium got it too (where I put more snails from them), but my 2nd aquarium inside did not which is how I traced the disease to them. I'll never buy plants/fish on-line again.
If you decide to go, you can stop by my house if you'd like (it's right on your way) and you can see my pond/eat. I'd even go with you to Hydroharvest if you wanted.
By the way, the leopard frog tadpoles I got from them last year (15) ALL grew to frogs and survived the winter! My bullfrogs have never made it... But when we re-did the pond we had all of them in a blow-up kiddy pool, and they all left