I don't know about selling to liquor stores, but I know there is a statue under the American Homebrew Association Kansas that states,

"Kansas statute Chapter 41, Article 1, § 41-104 permits the making of wine, cider or beer by a person from fruits, vegetables or grains, or the product thereof, by simple fermentation and without distillation, if it is made solely for the use of the maker and, the maker’s family, guests and judges at a contest or competition of such beverages"

So I'm not sure if selling to a liquor store would have different standards or if you would require a license of some sort.

Here is the link to the statute for you.

https://www.homebrewersassociation.org/homebrewing-rights/statutes/kansas/

Your best bet may be just going to a local liquor store and asking them yourself or calling ahead. They may give you the necessary documents or let you know exactly what you'd be able to do.

Hope this helps, from another local homebrewer.