About: http://webisa.webdatacommons.org/407007892

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	That Letter is a sample Letter created by Ludlow to show of their Font Underwood which is a copy of the Typewriter font of that period.
http://www.w3.org/ns/prov#wasQuotedFrom	collectorsweekly.com