About: http://webisa.webdatacommons.org/422598097

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	These materials are mostly undated, and therefore cannot be attributed to either father or son.
http://www.w3.org/ns/prov#wasQuotedFrom	pitt.edu