About: http://webisa.webdatacommons.org/287668097

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 following is a letter to the editor written by Professor Murray Comarow, a long-time student of things postal:
http://www.w3.org/ns/prov#wasQuotedFrom	postcom.org