Matches in DBpedia 2014 for { ?s ?p Portland and Southwestern Railroad Tunnel. }
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- National_Register_of_Historic_Places_listings_in_Columbia_County,_Oregon article "Portland and Southwestern Railroad Tunnel".
- National_Register_of_Historic_Places_listings_in_Columbia_County,_Oregon name "Portland and Southwestern Railroad Tunnel".
- Portland_and_Southwestern_Railroad_Tunnel name "Portland and Southwestern Railroad Tunnel".
- Portland_and_Southwestern_Railroad_Tunnel label "Portland and Southwestern Railroad Tunnel".
- Portland_and_Southwestern_Railroad_Tunnel name "Portland and Southwestern Railroad Tunnel".