Music slide:
May 1968, unplugged. 2 mins
https://www.beatlesbible.com/songs/while-my-guitar-gently-weeps/
sorry, second video.
last attempt
https://www.bing.com/search?q=esher+demos+while+my+guitar&cvid=3b4a89d724db48478acb6e4ae992258a&aqs=edge..69i57.12869j0j1&pglt=43&FORM=ANNTA1&PC=EDGEDSE