Weissmuller died on January 20, 1984. He was 79.
Here he is doing one of the first if not *the* first "Tarzan Call" from TARZAN THE APE MAN.
And here he is doing the call at RKO after the Tarzan series moved from MGM.
This is obviously Weissmuller doing the call himself. Sorry, I can't seem to imbed this video but the link should work...
Here's something from the TV series JUNGLE JIM.
Interesting to see the similarities to Lord Greystoke.