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
Baumwollspinnerei Hammerstein changed in a 1930 referendum to Wuppertal (“Wupper Valley”). The Hammerstein manor house controlled much of the valley floor of the Wupper. In 1825 it gave its name to the in , that still stands on the "Hammersteiner Allee", and to a station of the suspension railway. Sonnborn itself gave its name to the on the autobahn 46 and autobahn 535. Downhill from the Villa Hammerstein, the businessman Johann Christian Jung built the weaving sheds and the cotton mill "Baumwollspinnerei Hammerstein" alongside the Wupper between 1835 and 1837. He included workers accommodation in the form of an apartment block. The