[5] At this home, O'Neill wrote his final plays: The Iceman Cometh, Long Day's Journey Into Night, Hughie, and A Moon for the Misbegotten.

[6] O'Neill and his wife, actress Carlotta Monterey, showed their interest in Asian art, decor, and thought in preparing the home.

[10] They did so through several fundraising projects, including benefit performances of Eugene O’Neill's play Hughie featuring Jason Robards.

[11] Congressman George Miller and Senator Alan Cranston introduced companion bills to have Tao House recognized as a National Historic Site in 1975.

George Miller's HR 9126 passed in Congress and, on October 19, 1976, President Gerald Ford signed SB 2398 into law.

[12] Finally, on June 12 of 1980, ownership of Eugene O'Neill NHS officially transferred to the federal government, making it exactly under the NPS.

The Site occupies 13 acres (5.3 ha) accessible via car only by private road, so advance reservations are required to visit.