The Amazing 3 (partially lost English dub of anime series; 1965)
A still from the show.
Status: Partially Found
The Amazing 3 (Wonder 3 or W3 in Japan) is a 1965 manga series created by legendary manga writer Osamu Tezuka. It focuses on a trio of aliens disguised as a duck, horse, and a rabbit. An anime adaptation of the manga started airing on Japanese and American television in 1965. While the Japanese version of the anime can still be found on the Internet, the American dub is very hard to find and is rumored to be destroyed. The last time the English dub of the anime was ever aired and seen in on American Television was during the 1970's on Kcop-TV as reruns. A few episodes of the English dub were uploaded to YouTube sometime in 2013 or 2014 but later got removed most likely due to copyright infringement.
Findings
Youtube user peter vasiliou uploaded 2 and 1/2 episodes in English (not the best quality) he says he will try uploading more when he has time.