The True Tragedy of Richard III a source for his play, though the majority tend to favour this judgement. Geoffrey Bullough treats "The True Tragedy" as a "probable source" for "Richard III", citing several commonalities (as when, in both plays, Richard calls for a horse on Bosworth Field, yet refuses to flee the battle) — though Bullough admits that the nature of the plays' relationship is "not clear." The uncertainty in dating has allowed a few commentators to propose a reversed priority, and to argue that the author (or reviser) of "The True Tragedy" may have borrowed from Shakespeare's play. Shakespeare appears to have known of
Marshall Field III 1946, "Parade" had achieved a circulation of 3.5 million. In 1944, Marshall Field III formed the private holding company Field Enterprises. That same year, he purchased Simon & Schuster and Pocket Books. After his death, his heirs sold the company back to its founders, Richard L. Simon and M. Lincoln Schuster, while Leon Shimkin and James M. Jacobson acquired Pocket Books. A polo player, Field invested heavily in Thoroughbred racehorses in the United States and in Great Britain. Among his successful British horses were three fillies, who won the Irish Oaks, Golden Corn, who won England's Middle Park Stakes and