About: http://webisa.webdatacommons.org/300021153

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	All the letters in my autograph letter collection displayed here are either to or from authors and other people whose books I collect.
http://www.w3.org/ns/prov#wasQuotedFrom	mysentimentallibrary.com