Some of Tyrell L. Bowers novels are available on Kindle.
The Secret Of Snake Canyon (original novel published by Walker Westerns)
Ride Against The Wind (original novel published by Walker Westerns)
Armageddon At Gold Butte (original novel published as a Black Horse Western - and original BHW cover shown).
Also released last Friday: Chuck Tyrell's 'The Snake Den'.
But if you prefer books then Terrell L. Bowers latest BHW 'Ambush At Lakota Crossing' is due for release at the end of this month. However, I expect that it is available right now.