Photographs
Original photographs and negatives of O'Neill and his family, friends, and associates

The Sophus Winther Collection
Letters from O'Neill to Winther, recollections by Sophus and Eline Winther of visits with O'Neill, and books authored by Winther

The Horst Frenz Collection
Books and research papers by and about O'Neill and the theatre

Audio & Videotapes
Plays, interviews, television specials, and conferences

Visit O'Neill's Tao House
Information about Tao house along with a virtual tour

In 1974, the Eugene O'Neill Foundation saved Tao House in Danville, California from a wrecker's ball, then raised funds to secure the site where O'Neill wrote his most famous plays.  Today, the Foundation maintains the largest O'Neill research library west of the Beinecke at Yale, and produces artistic and educational programming on different levels including seminars, conferences, workshops, cultural events, student programming, exhibits, scholarly conferences, Playwright's Theatre, and major theatrical performances.

The archive at Tao House contains a large collection of photographs, ephemera, play bills, manuscripts, posters, O'Neill's original phonograph record collection, literary papers, audio and videotapes of productions and interviews, as well as a broad collection of books and other materials about O'Neill and the American Theatre.  Also available to scholars are copies of Carlotta Monterey O'Neill's diaries from 1928 through 1944 and 1954 courtesy of the Beinecke.