About: http://webisa.webdatacommons.org/346652314

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	letters, telegrams, memorials or other documents, between the post office department, or any official
http://www.w3.org/ns/prov#wasQuotedFrom	archive.org