Greenfield, Thomas Allen, Work and the Work Ethic in American Drama 1920—1970, University of Missouri Press, 1982.

This book, as its title suggests, explores dramatic treatments of work life. A Thousand Clowns is mentioned only briefly, as an example of how work divides people, especially among the middle class. Greenfield places Gardner in this regard alongside Neil Simon and Edward Albee, who also dealt in the 1960s with issues of work.

Guernsey, Otis L., Jr., ed., "Humor," in Broadway Song and Story: Playwrights, Lyricists, Composers Discuss Their Hits, Dodd, Mead, 1985, pp. 371—83.

This chapter is a transcribed conversation between Gardner and Russell Baker, Jules Feiffer, Terrence McNally, and Joseph Stein, about how they write comedy for the theater and about the early radio comics who inspired their work.

Hollis, Tim, Hi There, Boys and Girls: America's Local Children's TV Programs, University Press of Mississippi, 2001.

This serious...