In 1961, “Please Mr. Postman,” sung by the Marvelettes, became a number 1 hit song in America. In 1962, the Beatles were performing it during their live acts. The song would hit the number one spot again in 1975 in a version sung by the Carpenters. I thought you might like to see (and hear) the different versions.
NOTE: For those of you not alive in the 60’s and 70’s, a postman was a person who carried around written communications (they called them “letters”) and delivered them to special boxes for individuals. It was a fascinating system. In some cases it still exists.