Cohn, Ruby. New American Dramatists, 1960-1990. 2d ed. New York: St. Martin’s Press, 1991. A good reprise of Gelber’s association with the Living Theatre, the pivotal place of The Connection in subsequent theater experiments (“the trumpet of the Off-Off Broadway movement”), and his place alongside Israel Horovitz, Jean-Claude van Itallie, Megan Terry, and María Irene Fornés, in “actor-activated” theater.
Cutler, Bruce. Two Plays of the Living Theatre: The Difficult Wisdom of Nothing. Wichita, Kans.: Wichita State University Press, 1977. Cutler examines Gelber’s The Apple along with another Living Theatre work, Arnold Weinstein’s Red Eye of Love (1961). Contains a bibliography.
Gelber, Jack. “Jack Gelber Talks About Surviving in the Theater.” Interview by Albert Bermel. Theater 9 (Spring, 1978): 46-58. A long, penetrating interview, touching on Gelber’s views on staged readings, the finances of playwriting, and the idea behind Square in the Eye.
Gilman, Richard. Common and Uncommon Masks: Writings on Theatre, 1961-1970. New York: Random House, 1971. “Bad Connection” is Gilman’s opinion regarding the “disappointment” of The Apple, which he contrasts with The Connection:“Like The Connection, the play’s cast is an abstract community” but “all that selling of coffee that’s brewed on stage and the nightly auctioning off of the painter’s work” were embarrassing.
Marwick, Arthur. “Experimental Theatre in the 1960’s.” History Today. 44, no. 10 (October, 1994): 34. Marwick discusses experimental theater, touching on the Living Theatre and Gelber.
Shank, Theodore. American Alternative Theater. New York: Grove Press, 1982. Describes The Connection in a chapter on the beginnings of the Living Theatre and the desire of Julian Beck “not merely to entertain but to affect the audience so deeply that it had a cleansing effect.” Beck eventually thought of the play, however, as “deluding the audience.” Bibliography and index.
Tytell, John. The Living Theatre: Art, Exile, and Outrage. New York: Grove Press, 1998. Tytell tells the story of the Living Theatre, including Gelber’s role.