Bob Crosby from San Francisco on NBC in 1940. Episode 7. George Robert Crosby (August 23, 1913 – March 9, 1993) was an American jazz singer and bandleader, best known for his group the Bob-Cats, which was formed around 1935. The Bob-Cats were a New Orleans Dixieland-style jazz octet. He was the younger brother of famed singer and actor Bing Crosby. On TV, Bob Crosby guest-starred in The Gisele MacKenzie Show and was also seen on The Jack Benny Program. Crosby hosted his own afternoon TV variety show on CBS, The Bob Crosby Show (1953–1957). Crosby received two stars on the Hollywood Walk of Fame, for television and radio. 

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