Dorothy Hammerstein spouses to marry in 1929. Oscar also had two children from his first marriage: William Hammerstein and Alice Mathias. His marriage to Dorothy lasted until his death in 1960. They had a son together, James Hammerstein. Between the 1930s and the 1950s she operated Dorothy Hammerstein Inc, a high-profile interior design business, with clients on both coasts of the United States. In 1949, along with her husband and the novelists Pearl S. Buck and James A. Michener, she was a founder of Welcome House, an organization that facilitates the adoption of children of American and Asian parents. From its inception
Arthur Hammerstein his father had a disagreement with money spending and Arthur vowed never to speak to him again. With his father's support, Arthur embarked on his first production, "Naughty Marietta". Arthur's brother Willie Hammerstein died in June 1914, and Arthur took over management of the family's Victoria Theater. However, the theater was not financially viable and would be closed the next year. On its site, the first movie palace in Times Square, the Rialto Theatre, was built. Hammerstein was the producer of the Rudolf Friml operettas "The Firefly" (1912), "Katinka" (1915) and "Rose-Marie" (1924), which he collaborated on with his nephew,