About: http://webisa.webdatacommons.org/326150270

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	With the help of several internas and volunteers, more than 22,000 items have been catalogued, mostly photographs and books, including a collection of hundreds of PWD annual and special reports which date back to 1798.
http://www.w3.org/ns/prov#wasQuotedFrom	phillyh2o.org