Longarm and the Sidesaddle Assasin — Tabor Evans

Longarm locks horns with a lead-slinging lovely!

While riding the plains of Utah, two census-takers venture deep into Mormon country -- and end up six feet deeper. Someone wants to keep the U.S. government in the dark about the local population -- and U.S. Marshall Custis Long is called in to bring some light to the situation.
 
But before he can solve the murders, Longarm will have to uncover the identity of a mysterious, night-riding woman who has been warning trespassers to stay off Mormon land, and backing up her words with hot lead…