1960s for series to alternate or otherwise share a time slot in American broadcast network television (for example, The Jack Benny Show shared a time slot with, first Private Secretary and then The George Gobel Show), umbrella titles were not used by United States' networks until 1964, when NBC presented three half-hour programs on Monday nights as a programming block centered at a southern California apartment complex, 90 Bristol Court. While the 1964 programming experiment did not succeed (two of the series were cancelled; the third lasted the broadcast season but was not renewed for the 1965-1966 season), NBC was not dissuaded from further programming experimentation. Within a decade, the network then experimented with wheel series, first with Four in One and The Bold Ones, then with NBC Mystery Movie. Afterwards additional wheel series were presented by American broadcast networks, to varying degrees of success. The experiment was revived in 1979 with Cliffhangers. In the United Kingdom, umbrella titles were used in varying degrees in their programming as well. The long-running Doctor Who used umbrella titles on several levels, first with individual named episodes under the umbrella of the title of an overall story (the first four episodes were commonly called "An Unearthly Child" even though none of them actually showed it to be the title of the story); even after the naming of individual episodes ceased, umbrella titles were often used to collect stories with a common enemy or theme (Daleks stories, Cybermen stories, UNIT stories, and season-long "Key to Time" and "Trial of a Time Lord"). Motion pictures and literature The use of umbrella titles in motion pictures parallels their use in literature. Movie trilogies such as Lord of the Rings and the Three Colors trilogy (a.k.a. "Red, White, and Blue trilogy") commonly are called by umbrella titles, as was the case for their literary cousins (such as John Dos Passos' U.S.A.). Umbrella titles were often used to cover longer sequences of motion pictures or novels (such as the James Bond and Star Wars films and Marcel Proust's multi-volume Remembrance of Things Past). Often umbrella titles are used to collect motion pictures with common stars ("Marx Brothers movies") or common characters ("Dirty Harry movies"), as is the case for novels or comics ("Perry Mason novels", for example). In literature, sometimes an umbrella title is used for a collection of stories with a common locality, such as the Wessex