On America's first modern dance company and its many collaborators, with reproductions of costumes, sets, ephemera and more Ruth St Denis (1879–1968) and Ted Shawn (1891–1972) pioneered modern dance in the US with their company Denishawn, founded in 1914. Incorporating elements from ancient, non-Western and Native American sources, Denishawn became the first important American dance company. A generation of dancers and choreographers, including Martha Graham, trained and performed with the company, and many artists, including Auguste Rodin, John Singer Sargent, Katherine Dreier, Marcel...