title: Revisiting the history of the dental profession in Pennsylvania: Victorian-era advertising trade cards.
authors.affiliation: Department of Pediatric Dentistry, University of Pennsylvania School of Dental Medicine, USA.
authors.forename: Theodore P
authors.initials: TP
authors.lastname: Croll
authors.forename: Ben Z
authors.initials: BZ
authors.lastname: Swanson
mesh_terms: D000329:Advertising / Q000266:history*; D006665:History of Dentistry; D049672:History, 19th Century; D049673:History, 20th Century; D010414:Pennsylvania