Every store around used to sell all the licenses but "progress" has you go online or to one of the few Arkansas Game and Fish Offices.
We chose to go to the Calico Rock Arkansas office. The offices are always different. They have displays of taxidermy and many pamphlets to take with you.
So beware. This could be a great museum visit for you or a horror trip. All the animals USED to live in Arkansas. Enjoy!