The Firesign Theatre's Big Book of Plays -  The Firesign Theatre's Big Book Of Plays is a collection of transcriptions written by The Firesign Theatre for the title tracks of each of their first four albums. The book also contains some introductory material that is serious as well a few pieces that parody introductory material. Photos of the group-- childhood photos casual snapshots and full-costume publicity shots vaguely related to the written material-- are included. The book concludes with Lt. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Written Work