DuMont Television Network - early network (1946-56), most of their 175 shows are gone.
100
#5
Suggested by
drewbrown
BBC - Top of the Pops - Early episodes are lost, so many significant television appearances—such as The Beatles' last live television performance in 1966, and most appearances of Pink Floyd
100
#6
Suggested by
drewbrown
BBC - The Madhouse on Castle Street, a 1963 teleplay starring a then-unknown Bob Dylan
100
#7
Suggested by
drewbrown
Ed Sullivan debut episode (then called Toast of the Town) featuring Martin & Lewis
100
#8
Suggested by
drewbrown
Apollo 11's slow-scan television (SSTV) telecast (we have footage, just not the best one, leading to conspiracy series
100
#9
Suggested by
drewbrown
Search for Tomorrow - Long-running soap opera has thousands of missing episodes
100
#10
Suggested by
drewbrown
Pre-1978 Soaps - Procter & Gamble Productions, including Search for Tomorrow, Guiding Light, As the World Turns, The Edge of Night, and Another World, failed to preserve thousands of episodes
