Complex sentence: Trapnell also wrote scripts for "Yancy Derringer", "Lawman", and "Twelve O'Clock High", and authored the book "Teleplay; an introduction to television writing" (original edition, 1966; revised edition, 1974).
Split into simpler sentences: Trapnell also wrote scripts for "Yancy Derringer", "Lawman", and "Twelve O'Clock High". He also authored the book "Teleplay; an introduction to television writing" (original edition, 1966; revised edition, 1974).