About Mary Hamman
Mary Hamman was an American writer and editor. She was an editor for Pictorial Review, Good Housekeeping, Mademoiselle, as well as the modern living editor for LIFE and editor-in-chief for Bride & Home. The letter came back, "No such address." The photo, I later discovered, was cleverly mounted to look like a Polaroid, but actually was a ckip from a skin magazine. Picture Cookbook by the Editors of LIFE, first published 1958, with second and third editions in 1959 and 1960.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.