A kinescope is a device used to record the output of a television screen onto 16mm film. ABC-TV used kinescopes to create backup copies of episodes for the smaller-market stations who couldn't afford videotape recorders, or which broadcast the show at times other than the regular network airtime of 4:00PM ET/3:00pm CT (June 1966-April 1967), 3:30PM ET/2:30PM CT (April 1967-July 1968), and back to 4:00PM ET/3:00 CT (July 1968-April 1971) because they were broadcasting syndicated or local programming at that time. The kinescopes were recorded on 16mm black-and-white film, and continued to be used until the fall of 1970.