Missing credit for the Ambassador

I am absolutely sure that the Ambassador Dr Luthor(sp?)was played by Rolfe Sedan.

Besides his readily recognizable face you can clearly hear his unique oice and distinctive speech cadence. Perfect example of this (and played to hilarious effect) can be seen in an episode of The Adventures of Superman. Here's a link; http://youtu.be/9ucbxX1AtLI Yoda before there was a Yoda!

Trivia, he played a postman on the Burns & Allen Show and the Addams Family, and if memory serves, on the Jack Benny Show as well and in addition, and also even.