19th Century dentistry advertising trade cards.
Croll
Theodore P
TP
Department of Pediatric Dentistry, University of Pennsylvania School of Dental Medicine, USA.
Swanson
Ben Z
BZ
D000329:Advertising / Q000266:history*; D049672:History, 19th Century; D009518:New York; D014100:Toothpastes / Q000266:history*
D014100:Toothpastes