The general store owned by Boerner and Troutfetter in western Kansas closed in the early 20th century.
It's not often I can pick up a little bit of family history on Ebay. There's more on Ebay than simply pictures and postcards.
If you've not searched for names and locations in your personal history, give it a try. While I don't know the provenance of this item, I have no reason to doubt it's what it purports to be.