About: http://webisa.webdatacommons.org/201072925

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	The romance of greeting cards; an historical account of the origin, evolution, and development of Christmas card, valentine, and other forms of engraved or printed greetings from the earliest days to the present time.
http://www.w3.org/ns/prov#wasQuotedFrom	si.edu