- Harpers Ferry (New York: A.S. Barnes, 1960, 67)
First new play in a classical repertory produced by the Tyrone Guthrie Theater, Minneapolis, 1967.
John Brown adopts guerrilla warfare to overthrow slavery. The raid fails and he is executed, but slavery is eventually abolished.
- Lamp At Midnight (New York: A.S. Barnes, 1966.)
First produced at New Stages, New York, 1947.Television adaptation Hallmark Hall of Fame, 1966.
Galileo challenges religious dogma with science and finds enormous resistance to the truth.
- The Man Who Never Died (New York: A.S. Barnes, 1972)
Joe Hill confronts power by organizing a trade union and pays with his life. First produced at the Jan Hus Theater, New York, 1958.
- The Raw Edge of Victory in Dramatics Vol. 57, No. 8 and 9 (April and May 1986).
George Washington leads a revolution to establish national independence.
Just completed, March 2003, not published yet.