Lonesome Dove, Volume 1 by Larry McMurtry

ALMOST AT ONCE, before the group even got out of Texas, Jake had cause to regret that he had ever agreed to ride with the Suggs brothers. The first night he camped with them, not thirty miles north of Dallas, he heard talk that frightened him. The boys were discussing two outlaws who were in jail in Fort Worth, waiting to hang, and Dan Suggs claimed it was July Johnson who had brought them in. The robbers had put out the story that July was traveling with a young girl who could throw rocks better than most men could shoot.

"I'd like to see her throw rocks better than Frog can shoot," Roy Suggs said. "I guess Frog could cool her off."