Lonesome Dove, Volume 1 by Larry McMurtry

AUGUSTUS SPENT HALF THE FIRST DAY finding the tracks, for Blue Duck had been cool enough to lead Lorena through the stampeding cattle, so that their tracks would be blotted out by the thousands of cattle tracks. It was a fine trick, and one not many men would dare to try.

Years had passed since Augustus had done any serious tracking. He rode around all morning, trying to remember the last man he had tracked, just to give himself perspective. It seemed to him that the last man had been an incompetent horsethief named Webster Witter, who had rustled horses in the Blanco country at one time. He and Call had gone after him one day by themselves and caught him and hung him before sundown. But the tracking had been elemental, due to the fact that the man had been driving forty stolen horses.