About: http://webisa.webdatacommons.org/19912186

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In 2000, Trustee William H. Helfand donated more than 7,500 trade cards relating to proprietary medicines, physicians, pharmacists, and other health professionals.
http://www.w3.org/ns/prov#wasQuotedFrom	librarycompany.org