The BBS 16mm Scan (1969) (Patreon)

This scan was obtained by Jerico late last year/earlier this year.

It says that it is episode 20, but the year in the credits is 1969, so this would have been during the run on CBS when dubbed The Bugs Bunny/Road Runner Hour. The cartoon combination here is probably re-edited as the cartoons are not listed in this order on the Bugs Bunny Show Wikipedia page (actually High Note is not listed in the original run).