NMAH – Mister Rogers' Sweater, su go.si.edu, National Museum of American History. URL consultato il 31 maggio 2007 (archiviato dall'url originale il 3 luglio 2007).
«The red sweater, knitted by his late mother, was donated to the Smithsonian's National Museum of American History by Fred Rogers on November 20, 1984.»
