Howard Tunnel (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Howard Tunnel" in English language version.

refsWebsite

Global rank English rank

135^th place

105^th place

1web.archive.org

1^st place

1^st place

2,762^nd place

1,498^th place

low place

7,014^th place

1classicrail.com

low place

low place

classicrail.com

Northern Central Railway, Inc. [1] 2001-09-02

nps.gov

npgallery.nps.gov

"National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.

nrhp.focus.nps.gov

U.S. National Park Service National Register Information System (NRIS): Howard Tunnel, Northern Central Railway. NRIS Item No. 95000541. Listed 1995-05-19.

penndot.gov

gis.penndot.gov

"National Historic Landmarks & National Register of Historic Places in Pennsylvania". CRGIS: Cultural Resources Geographic Information System. Archived from the original (Searchable database) on 2007-07-21. Retrieved 2011-12-17. Note: This includes Thomas N. Shaffer (June 1992). "National Register of Historic Places Inventory Nomination Form: Howard Tunnel, Northern Central Railway" (PDF). Retrieved 2011-12-17.

state.pa.us

dot7.state.pa.us

"National Historic Landmarks & National Register of Historic Places in Pennsylvania". CRGIS: Cultural Resources Geographic Information System. Archived from the original (Searchable database) on 2007-07-21. Retrieved 2011-12-17. Note: This includes Thomas N. Shaffer (June 1992). "National Register of Historic Places Inventory Nomination Form: Howard Tunnel, Northern Central Railway" (PDF). Retrieved 2011-12-17.

web.archive.org

"National Historic Landmarks & National Register of Historic Places in Pennsylvania". CRGIS: Cultural Resources Geographic Information System. Archived from the original (Searchable database) on 2007-07-21. Retrieved 2011-12-17. Note: This includes Thomas N. Shaffer (June 1992). "National Register of Historic Places Inventory Nomination Form: Howard Tunnel, Northern Central Railway" (PDF). Retrieved 2011-12-17.