About: http://webisa.webdatacommons.org/334595401

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	Martha Farnsworth Riche, who was census director at the time, says the change was a case study of the power of a letter-writing and lobbying campaign by a small but committed group of middle-class families.
http://www.w3.org/ns/prov#wasQuotedFrom	prospect.org