- (June 7, 1962) His play, "Afore Night Come", was performed at the Arts Theatre Club in London, England in a Royal Shakespeare Company production with David Warner, Freddie Jones and Timothy West in the cast. Clifford Williams was the director.
- (June 7, 1962) His play, "Afore Night Comes," was performed at the New Arts Theatre in London, England in a Royal Shakespeare Company production.
- (1978) His play, "The Sons of Light", was performed in a Royal Shakespeare Company production at the Royal Shakespeare Company Warehouse Theatre in London, England with Anton Lesser, Nigel Terry, Charlotte Cornwell, John Rhys-Davies, Sheila Allen', Alan David, Jack Klaff and David Threlfall in the cast. Ron Daniels was the director.
- (1979) His stage adaptation of Euripides' play, "Hippolytus", was performed in a Royal Shakespeare Company production at the Royal Shakespeare Company Warehouse Theatre in London, England with Patrick Stewart, Michael Pennington, Juliet Stevenson and Natasha Parry in the cast. Ron Daniels was the director.
- (November 1981) His play, "Hansel and Gretel", was performed in a Royal Shakespeare Company production at the Royal Shakespeare Company Warehouse in London, England with Brenda Bruce, Janine Duvitski and Allan Hendrick in the cast. Ron Daniels was the director.
- (1975) His play, "Ashes", was performed at the Gardner Centre Theatre in Brighton, East Sussex, London, England with Ian McKellen, Gemma Jones, Paul Shelley and Ann Mitchell in the cast.
- (January 31, 1979 to March 4, 1979) Jack Heifner's play, "Vanities," and his play, "Ashes," was performed at the Public Theater in Pittsburgh, Pennsylvania.
- (May 16 to June 19, 1976) His play, "Ashes," was performed in an American premiere at the Mark Taper Forum Theatre in Los Angeles, California. Edward Parone was director.
- (1974-1975 season) His play, "Afore Night Comes," was performed in an American premiere at the Long Wharf Theatre in New Haven, Connecticut. Ron Daniels was director. David Jenkins was set designer. Jania Szatanski was costume designer. Ronald Wallace was lighting designer.
- (1975) His play, "Afore Night Comes," was performed in an American premiere at the Long Wharf Theatre in New Haven, Connecticut with Frank Converse in the cast. Ron Daniels was director. David Jenkins was set designer. Jania Szatanski was costume designer. Ronald Wallace was lighting designer.
- (1975) His play, "Afore Night Comes," was performed in an American premiere at the Long Wharf Theatre in New Haven, Connecticut with Mary Fogarty and Emery Battis in the cast. Ron Daniels was director. David Jenkins was set designer. Jania Szatanski was costume designer. Ronald Wallace was lighting designer.
- (1977 to 1978 season) His play, "Ashes," was performed at the Tyrone Guthrie Theater 2, Washington Avenue, Minneapolis, Minnesota with Karen Landry and James Hurdle in the cast. Emily Mann was director.
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