About: http://webisa.webdatacommons.org/128501422

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 of maps that trace American history through such themes as territorial expansion and slavery.
http://www.w3.org/ns/prov#wasQuotedFrom	phc.edu