Lookout Cartridge is Joseph McElroy's fourth novel, published by Knopf in 1974. The narrator, Cartwright, had made with his friend Dagger an art film/documentary about power using loaned professional equipment, with scenes set in Stonehenge, Hyde Park, and other locations in England, plus one scene in Ajaccio, Corsica. But someone destroyed it, and when acquaintances in New York press Cartwright for information about an alleged second print, the sound track, and even his personal diary, he finds himself trying to find out what really happened. Doing so involves multiple trips between New York and England, including a visit to the Hebrides and the Stones of Callanish, and increasing danger and death. Larry McCaffery ranked Lookout Cartridge 39th in his top 100 20th-century English novels list. Source: Wikipedia (en)