19th century dentistry advertising trade cards. Gates of Pearl.
Croll
Theodore P
TP
Department of Pediatric Dentistry, University of Pennsylvania School of Dental Medicine, USA.
Swanson
Ben Z
BZ
D000329:Advertising / Q000266:history*; D003802:Dentifrices / Q000266:history*; D006665:History of Dentistry; D049672:History, 19th Century; D008512:Medicine in the Arts
D003802:Dentifrices