found: Unsuitable for adults, 1986:CIP t.p. (Terry Johnson)
found: Phone call to publisher, 6-26-85(Terry Johnson; b. 12-20-55)
found: Cries from the mammal house, 1984:t.p. (Terry Johnson) p. 4 of cover (lists works, including Insignificance)
found: Wikipedia, March 26, 2015(Terry Johnson (Dramatist); Terry Johnson (born 20 December 1955) is a British dramatist and director working for stage, television and film. Educated at Birmingham University, he worked as an actor from 1971 to 1975, and has been active as a playwright since the early 1980s) - http://en.wikipedia.org/wiki/Terry_Johnson_%28dramatist%29