Typewritten manuscript, "Oh, Once in my Saddle. . . " by David Lamson, a man accused of the murder of his wife, and correspondence relating to John Mayfield's acquisition thereof. Also includes two related pieces of printed material.

Most of the collection relates to John S. Mayfield's, "Eugene O'Neill and the Senator from Texas." Collection contains correspondence between Mayfield and others such as Carlotta O'Neill and O'Neill biographer Louis Sheaffer. Also in the collection are manuscripts, drafts and proofs of Mayfield's work, and printed material about O'Neill.