ɹˈaɪɾɚ ɹˈɑːdʒɚ sˈɪmpsən hɐdbɪn ɹᵻsˈɜːtʃɪŋ ðə pˈiəɹɪəd sˈɪns hiː hˈɛlpt ɐdˈæpt pˈaʊɚ wɪðˌaʊt ɡlˈoːɹi nˈaɪntiːnhˈʌndɹɪd sˈɛvənti sˈɪks.
Writer Roger Simpson had been researching the period since he helped adapt Power Without Glory (1976.)