Matches in DBpedia 2014 for { <http://dbpedia.org/resource/National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland> ?p ?o. }
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Gladden Farm".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Graham-Crocker House".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Gray Gables".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Graystone Lodge".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Griffith House".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Gunpowder Meetinghouse".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Harford Furnace Historic District".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Harford National Bank".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Havre de Grace Historic District".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Hays House".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Hays-Heighe House".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Heighe House".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Hidden Valley Farm".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Husband Flint Mill Site".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Ivory Mills".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "James B. Baker House".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Jericho Covered Bridge".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Jerusalem Mill Village".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Joshua's Meadows".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Ladew Topiary Gardens".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Liriodendron".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Little Falls Meetinghouse".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Lower Deer Creek Valley Historic District".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Martha Lewis".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "McComas Institute".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Medical Hall Historic District".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Mill Green Historic District".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Mount Adams".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "My Lady's Manor".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Nelson-Reardon-Kennard House".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Norris-Stirling House".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Odd Fellows Lodge".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Old Joppa Site".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Olney".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Pooles Island Light".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Poplar Hill".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Presbury Meetinghouse".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Priest Neal's Mass House and Mill Site".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Proctor House".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Rigbie House".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Rockdale".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Silver Houses Historic District".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Sion Hill".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Slate Ridge School".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Sophia's Dairy".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Southern Terminal, Susquehanna and Tidewater Canal".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "St. George's Parish Vestry House".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "St. Ignatius Church".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "St. Mary's Church".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Swansbury".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "The Vineyard".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Thomas Run Church".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Tudor Hall".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Webster's Forest".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Whitaker's Mill Historic District".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Whiteford-Cardiff Historic District".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Wildfell".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Winsted".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Woodside".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland article "Woodview".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Aberdeen,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Aberdeen_Proving_Ground.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Abingdon,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Baldwin,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Bel_Air,_Harford_County,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Berkley,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Churchville,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Creswell,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Darlington,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Edgewood,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Emmorton,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Fallston,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Forest_Hill,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Havre_de_Grace,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Jarrettsville,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Jerusalem,_Baltimore_County,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Joppa,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Joppatowne,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Kalmia,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Perryman,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Street,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Taylor,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city White_Hall,_Baltimore_County,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland city Whiteford,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland county Harford_County,_Maryland.
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1972-02-11".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1973-03-14".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1973-03-30".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1973-05-08".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1973-08-14".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1973-08-28".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1973-09-20".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1974-04-16".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1974-05-23".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1974-06-05".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1975-05-12".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1975-06-18".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1975-08-22".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1976-03-26".
- National_Register_of_Historic_Places_listings_in_Harford_County,_Maryland date "1976-04-02".