The Independent

Gladys Horton: Singer with the Marvelettes, who had Motown's first No 1 with 'Please Mr Postman'

Gladys Horton was the lead singer with the Marvelettes, who topped the American charts with "Please Mr Postman" in December 1961. It was a key record for boosting morale during the Vietnam War.
Rolling Stone

Georgia Dobbins Davis, Unsung Motown Hero Who Co-Wrote ‘Please Mr. Postman,’ Dead at 78

Georgia Dobbins Davis, an original member of the Marvelettes and the co-writer of their classic 1961 hit, “Please Mr. Postman,” died Friday, September 18th. She was 78. Dobbins’ daughter, Kimberly Ann ...