Michaeljc70, I live in IL, about 4 hours south of Chicago. I had tons of bullfrog tadpoles in my farm pond in the spring. You probably don't want them too early, before our waters warm up. If I knew how to ship them, I'd be happy to share some with you, just pay the shipping cost, but I have no idea how they are shipped. I don't have access to oxygen, if they needed that. I probably have smaller
frog tadpoles, too, just never looked closely. I had bullfrogs, Northern Cricket Frogs, and leopard frogs come to my pond last summer, and it was the first year for my pond! I know that the larger frogs, probably the bull frogs, are staying in the water, as I saw them in December when I was pulling string algae and they were hiding in it. Saw one again couple of weeks ago when I was pulling stuff out of the bog. I will probably have tadpoles in the bog this year, since it has about 2" of water in it all the time when the pond is up and running.
I'm sure you will find tadpoles on Ebay, and probably really cheap! I know I have bullfrogs in my farm pond, and the tadpoles from that wre about 3-4" long last spring! If you have friends who are also interested, you could make a trip down this way to gather some. I also have pond wiegelia growing wild, and you can have all you want of that. It floats and has tons of roots that help oxygenate the water, plus they have tiny yellow flowers. The bonus is that the koi didn't seem to bother it at all last year. I also had a baby red slider turtle find my koi pond, and am hoping he has hibernated either in the bog, or nearby. He/she was so much fun to watch! Learned to feed right along with the koi, and figured out to stay back or get "tumbled" when the koi would get aggressive with the food.
So, I have lots of critters in my pond. Let me know if you would like anything. It's probably not worth the trip alone, but if you have friends with ponds, might be a fun weekend trip.