Kerry Seagrave, America Brushes Up: The Use and Marketing of Toothpaste and Toothbrushes in the Twentieth Century (Jefferson, N.C.: McFarland, 2010); Alys Eve Weinbaum, et al., The Modern Girl Around the World: Consumption, Modernity, and Globalization (Durham, N.C.: Duke University Press, 2008), 28–30.
