About: http://webisa.webdatacommons.org/170265488

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	While much of the mail was being conveyed by the railroads in the early twentieth century, this trend was reversing, especially after the Second World War.
http://www.w3.org/ns/prov#wasQuotedFrom	si.edu