About: http://webisa.webdatacommons.org/436558158

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	While stamps could be purchased by anyone, they were often aimed for sale at the youth of the time, through schools and other kinds of organizations.
http://www.w3.org/ns/prov#wasQuotedFrom	sunadvocate.com