Michael Pajaro found this news item:
From the Smithsonian website: "Case: Taking America to Lunch April 13, 2004 - Indefinitely On view are approximately 75 illustrated metal lunch boxes and beverage containers dating from the 1890s through the 1980s to celebrate the history and endurance of American lunch boxes. After reaching the height of their popularity at the dawn of the television era, lunch box sales became barometers for what was current in popular culture."http://www.si.edu/visit/whatsnew/nmah.asp
