SELECT DISTINCT ?s
WHERE {
?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Location>
?s <http://dbpedia.org/ontology/wikiPageExternalLink> <http://pdfhost.focus.nps.gov/docs/NRHP/Text/64000726.pdf>
MINUS {?s dbo:wikiPageRedirects ?o . }}
