I had to google that line "goodnight Mrs. Calabash-wherever you are" to see it was a closing line that Jimmy Durante.
Taken from Wikipedia:
One theory was that it referred to the owner of a restaurant in
Calabash, North Carolina, where Durante and his troupe had stopped to eat. He was so taken by the food, the service, and the chitchat he told the owner that he would make her famous. Since he did not know her name, he referred to her as "Mrs. Calabash".[SUP]
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Another idea was that it was a personal salute to his deceased first wife, Jeanne (Olsen) Durante, who died in 1943. "Calabash" might be a mangle of
Calabasas, the California city where they made their home during the last years of her life.
At a
National Press Club meeting in 1966 (broadcast on
NBC's
Monitor program), Durante finally revealed that it was indeed a tribute to his wife. While driving across the country, they stopped in a small town called Calabash, which name she had loved. "Mrs. Calabash" became his pet name for her, and he signed off his radio program with "Good night, Mrs. Calabash." He added "wherever you are" after the first year.[SUP]
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