Cowboy Songs is a classic collection of American folk music lyrics as compiled by John A. Lomax. It is now four or five years since my attention was called to the collection of native American ballads from the Southwest, already begun by Professor Lomax. At that time, he seemed hardly to appreciate their full value and importance. To my colleague, Professor G.L. Kittredge, probably the most eminent authority on folk-song in America, this value and importance appeared as indubitable as it appeared to me. We heartily joined in encouraging the work, as a real contribution both to literature and to learning. The present volume is the first published result of these efforts.