[gundog]

Edgar Buchanan. Uncle Joe from “Pettycoat Junction.” LITB, was a good show for bringing in character actors. Burt Mustin was another great.

[DFG]

Burt Mustin started his professional acting career at age 67. He appeared in over 150 film and television productions.

https://en.wikipedia.org/wiki/Burt_Mustin

[ansel12]

“”Burt Mustin””
Born 1884.

“”Edgar Buchanan. Uncle Joe from “Pettycoat Junction.”””
A dentist turned actor.

[DFG]

https://www.metv.com/quiz/can-you-tell-what-show-burt-mustin-is-in

https://www.metv.com/stories/burt-mustin-jud-fletcher-andy-griffith-show-started-acting-age-67

https://www.metv.com/stories/at-the-age-of-84-burt-mustin-made-his-singing-debut-with-elvis-and-a-mop

https://www.metv.com/stories/burt-mustin-attended-the-first-world-series-ever-and-once-told-johnny-carson-all-about-it

[John Milner]

Also, Doris Packer, who played the principal (Mrs. Rayburn) at Beaver’s school also played the mother of Chatsworth Osborne Jr from Dobie Gillis Show. Also Mrs. Fenwick on the Beverly Hillbillies.

And Madge Blake, who played Larry Mondello’s mother later played the part of Aunt Harriet on the Batman television show.