About: http://webisa.webdatacommons.org/284423178

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	Study of historical or ethnographic documents, such as maps and journals. ?? If the techniques listed above cannot be applied, set the boundaries by conservatively estimating the extent and location of the significant features.
http://www.w3.org/ns/prov#wasQuotedFrom	nps.gov