The Pony Rider Boys in the Grand Canyon: The Mystery of Bright Angel Gulch

"Ow, Wow, Wow, Wow! Y-E-O-W!" Tad Butler, who was industriously chopping wood at the rear of the woodshed of his home, finished the tough, knotted stick before looking up. The almost unearthly chorus of yells behind him had not even startled the boy or caused him to cease his efforts until he had completed what he had set out to do. This finished, Tad turned a smiling face to the three brown-faced young men who were regarding him solemnly.