Hey Kevin,
I always use Gaylord Crawford out of Hastings (Willow Lake Fish Hatchery) he's been very good to me over the years, he's friendly and knowledgeable. You could go the free route with the NE Game & Parks (contact Jeff Blaser). But, you have to wait until the fish are available and they don't provide catfish.

Hope you have better luck than us. We have a new pond that will be 4-1/2 acres of water when full, if this drought ever ends.

Brad B.
Valparaiso