Two incomplete episodes of The Tonight Show Starring Johnny Carson were uploaded to YouTube earlier this week by Obsolete Video. According to the comments section, one is from September 4th, 1970 (with guests Jerry Lewis and Zsa Zsa Gabor) and the other is from February 17th, 1971 (with guests Jack Benny, David Steinberg, and Lily Tomlin).
Although incomplete, these are notable because few episodes from the first ten years of The Tonight Show Starring Johnny Carson survive. Reportedly, only a few dozen complete episodes from that period still exist. Are these partial episodes otherwise lost? It’s impossible to say for sure. As far as I know, there is no publicly accessible list of surviving episodes–or partial episodes, for that matter.
Earlier this year, most of an episode from August 1964 was recovered and restored.