Oscar Hammerstein II Mathias by his first wife, and James Hammerstein by his second wife, with whom he also had a stepdaughter, Susan Blanchard. Hammerstein was one of the most important "book writers" in Broadway history – he made the story, not the songs or the stars, central to the musical and brought musical theater to full maturity as an art form. According to Stephen Sondheim, "What few people understand is that Oscar's big contribution to the theater was as a theoretician, as a Peter Brook, as an innovator. People don't understand how experimental "Show Boat" and "Oklahoma!" felt at the time they
Hammerstein House Hollywood Historical Society in honor of his late wife Vera Hammerstein. It was his wish that the home be operated as a museum and he contributed many artifacts of his life which form much of the display there. Items on display include Hammerstein's WWI Air Force uniform. The ashes of the home's owners Clarence and Vera Hammerstein reside at the house in two large urns. It was added to the National Register of Historic Places on February 15, 2005. The home is operated as a historic house museum by the Hollywood Historical Society and contains artifacts of the Hammerstein's life.