Arthur Hammerstein (1873-October 12, 1955), was the uncle of Oscar Hammerstein II, was an opera producer and one of the writers of the song "Because of You," a major hit (#1 for 10 weeks) for Tony Bennett in 1951. Hammerstein wrote the song for the film "I Was an American Spy" (1951). He was the producer of the musical comedies "The Firefly" (1912), and "Rose Marie" (1924), which he did along with his brother, Oscar Hammerstein II. Wikipedia
The definitive Wikipedia entry for Arthur Hammerstein. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Arthur_Hammerstein