To get to GroVont, do I have to drive through Absaroka County?

The following items represent fictional places in a very real state, Wyoming. Name the very creative authors who have given us the sheriff of Absaroka County (No. 24 on state license plates) and the town of GroVont with its fictitious school calendar. There are no prizes for correct guesses. However, you will sleep better knowing that you are up-to-date on your knowledge of Wyoming writers. (P.S.: The books and accompanying paraphernalia make great Christmas presents!).