From the back of the book:
One Riot One Ranger!
And this book is for your Ranger, amigo. Inside you'll find all the information your Texas Ranger hero is given to start his career as a rootin', tootin', Hell-stompin', fire-eatin', lead-slingin', monster-killin' badass!
You'll learn all about the various ranks of Rangerdom, what they get you, and just how much Hell you can call in if things get too rough. If that's not enough, there's new gear, a whole passel of new ameuvers to use in hand-to-hand fighting, and a complete primer on the nasty denizens of the Weird West - at least as far as has been collected so far.
The Rangers have also developed a whole new school of arcana gunfighting. We'll tell you all about the "shootist" right here in this book if you've go the cojones to handle it.
For the righteous-minded, a choir of angels will sing about the Rangers' Chaplain's Corps, holy butt-kickers who use a six-gun and the power of the All Mighty to fight the horrors of Deadlands.
Best of all, Lone Stars is dual-statted for both Classic Deadlands and Deadlands D20!