As for Ray Carlson, I have absolutely no recollection of him or his character, Aldon Wicks. Anyone have a screen cap on hand?
There's this from the Robservations Slideshow for June 3rd:
(http://www.dsboards.com/eventimages/0603ds_9.jpg)
1970: Ep #1028 - While renting a house from Aldon Wicks,
Yaeger expresses particular interest with a basement room.
But I'd have to track down my caps from that ep to see if I have anything better, like a close-up...
This is probably the best close-up I have of him:
(http://www.dsboards.com/images/1028-1.jpg)