About: http://webisa.webdatacommons.org/390549477

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	Series VI. Secretary's Contract Files Scope and Content Notes: These files from the Office of the Secretary of the Pittsburgh Coal Company include mortgages, deeds, leases, and other contractual agreements.
http://www.w3.org/ns/prov#wasQuotedFrom	pitt.edu