Make Em Laugh - Unaired CBS Comedy special w/George Carlin, Rip Taylor, Norm Crosby, Muppets & more

As far as I can tell this has never been aired. It's a comedy special called "Make Em Laugh - Young People's Comedy Concert" filmed at the Mayfair Music Hall in Santa Monica, CA. It's hosted by Tom Bosley and features:
3:10 Robert Shields' mime act
7:10 Soupy Sales as Cedric the Jester
10:17 Kermit the Frog & Fozzie Bear
12:54 Skiles & Henderson funny sounds
16:05 Chuck McCann & Jim MacGeorge as Laurel and Hardy
23:05 George Carlin
31:20 Norm Crosby
37:55 Rip Taylor as a heckler