(1930's-1960's) Gregg was a prolific radio actress, heard on such programs as The Adventures of Sam Spade, Dragnet, Dr. Kildare, Gunsmoke, The Jack Benny Program, Let George Do It, Lux Radio Theatre, One Man's Family, Yours Truly, Johnny Dollar, The Screen Guild Theater, The CBS Radio Mystery Theatre, The Zero Hour and Mutual Radio Theater.