Her lunch box reads "Rosie"; viewers quickly recognized this to be "Rosie the Riveter" from the familiar song.[43] Rockwell, America's best-known popular illustrator of the day, based the pose of his 'Rosie' on that of Michelangelo's 1509 Sistine Chapel ceiling image of the prophet Isaiah. Rosie is holding a ham sandwich in her left hand, and her blue overalls are adorned with badges and buttons: a Red Cross blood donor button, a white "V for Victory" button, a Blue Star Mothers pin, an Army-Navy E Service production award pin, two bronze civilian service awards, and her personal identity badge.[44] Rockwell's model was a Vermont resident, 19-year-old Mary Doyle, who was a telephone operator near where Rockwell lived, not a riveter. Rockwell painted his "Rosie" as a larger woman than his model, and he later phoned to apologize.[44] The Post's cover image proved hugely popular, and the magazine loaned it to the U.S. Treasury Department for the duration of the war, for use in war bond drives.[45]