Stella Hammerstein year, she co-authored "Getting the Goods", a play for vaudeville. Hammerstein appeared in the films "The Ace of Death" (1915), "Anna Karenina" (1915), and "Social Hypocrites" (1918). In September 1919, approximately two months after the death of their father, Hammerstein and her sister, Rose Hammerstein Tostevain, became owners of the Hammerstein Amusement Company. A judge of the Supreme Court of the State of New York ruled that the two daughters were the rightful owners of 4,998 shares of the company's total of 5,000 shares of stock. The ownership had been the subject of a legal dispute involving the sisters, Oscar
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