title: 19th century dentistry advertising trade cards.
authors: Department of Pediatric Dentistry, University of Pennsylvania School of Dental Medicine, USA.
authors: Theodore P
authors: TP
authors: Croll
authors: Ben Z
authors: BZ
authors: Swanson
mesh_terms: D000329:Advertising / Q000266:history*; D006665:History of Dentistry; D049672:History, 19th Century; D006801:Humans; D009671:Nostrums / Q000266:history*; D014481:United States
chemical_list: D009671:Nostrums