Another great source of information concerning the history of the search for extraterrestrial intelligence is writer David H. Szondy's exciting and wonderful website Tales of Future Past (Life On Other Worlds).
Here are five video clips from this exciting program that aired on The History Channel.
Postscript: Through the kind assistance of Ed Minchau (of Space Video of the Day and Space Feeds Fame) I was able to revise this posting and fit all five video clips into one frame. Thanks very much Ed. Your robot guy and Space feeds site still provide are a tremendous source of inspiration to me. Thanks for the many wonderful videos you posted in the past. Please continue your wonderful work.