The Big Show (aired on NBC)
April 29, 1951 with Milton Berle and Jimmy Durante. (90 minutes)
A zip file containing almost every episode of the show can be found at Archive.org. I'm afraid there's no seperate link, but you can find that here.

Bing Crosby Show (aired on CBS)
June 11, 1952 w/ Joe Venuti
December 4, 1952
December 11, 1952
April 18, 1954
May 2, 1954

Edgar Bergen Show  (aired on CBS)
October 5, 1952
Download this episode from Archive.org here.

Suspense "St. James Infirmary Blues" (aired on CBS)
Febuary 23, 1953

Best of All
October 4, 1954 - "Irving Berlin" with Bing Crosby and Polly
Bergen.
December 20, 1954 - The Small One" with Bing Crosby.