About: http://webisa.webdatacommons.org/297492565

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	http://www.mgs.md.gov/esic/freeseries.html for information on USGS topographic maps and other topics that may help you.
http://www.w3.org/ns/prov#wasQuotedFrom	maryland.gov