Ridge Pike (English Wikipedia)

Berks County, Pennsylvania Highway Map (PDF) (Map). PennDOT. 2020. Archived from the original (PDF) on October 16, 2015. Retrieved October 7, 2020.
Montgomery County, Pennsylvania Highway Map (PDF) (Map). PennDOT. 2020. Archived from the original (PDF) on September 5, 2017. Retrieved October 7, 2020.
Philadelphia County, Pennsylvania Highway Map (PDF) (Map). PennDOT. 2020. Archived from the original (PDF) on September 14, 2018. Retrieved October 7, 2020.
Map of Pennsylvania Showing State Highways (PDF) (Map). Pennsylvania Department of Highways. 1911. Archived from the original (PDF) on March 2, 2016. Retrieved June 24, 2010.
Official Road Map of Pennsylvania (PDF) (Map). Pennsylvania Department of Highways. 1940. Retrieved June 24, 2010.
Official Road Map of Pennsylvania (back) (PDF) (Map). Pennsylvania Department of Highways. 1940. Archived from the original (PDF) on March 11, 2016. Retrieved June 24, 2010.
Official Road Map of Pennsylvania (back) (PDF) (Map). Pennsylvania Department of Highways. 1950. Archived from the original (PDF) on March 11, 2016. Retrieved January 16, 2014.
Official Map of Pennsylvania (back) (PDF) (Map). Pennsylvania Department of Highways. 1960. Archived from the original (PDF) on March 11, 2016. Retrieved January 16, 2014.
Official Map of Pennsylvania (PDF) (Map). Pennsylvania Department of Highways. 1970. Retrieved June 30, 2010.
Official Map of Pennsylvania (back) (PDF) (Map). Pennsylvania Department of Highways. 1970. Archived from the original (PDF) on March 11, 2016. Retrieved December 16, 2014.
Pennsylvania Official Transportation Map (PDF) (Map). Pennsylvania Department of Transportation. 1989. Archived from the original (PDF) on June 18, 2016. Retrieved November 13, 2019.

ushistory.org (Global: 6,795^th place; English: 4,866^th place)

"Philadelphia History: Ridge Street (Ridge Avenue)". www.ushistory.org.

web.archive.org (Global: 1^st place; English: 1^st place)

Berks County, Pennsylvania Highway Map (PDF) (Map). PennDOT. 2020. Archived from the original (PDF) on October 16, 2015. Retrieved October 7, 2020.
Montgomery County, Pennsylvania Highway Map (PDF) (Map). PennDOT. 2020. Archived from the original (PDF) on September 5, 2017. Retrieved October 7, 2020.
Philadelphia County, Pennsylvania Highway Map (PDF) (Map). PennDOT. 2020. Archived from the original (PDF) on September 14, 2018. Retrieved October 7, 2020.
Map of Pennsylvania Showing State Highways (PDF) (Map). Pennsylvania Department of Highways. 1911. Archived from the original (PDF) on March 2, 2016. Retrieved June 24, 2010.
Map of New Jersey (Map). Tydol Trails. 1927. Archived from the original on May 14, 2011. Retrieved February 9, 2011.
Official Road Map of Pennsylvania (back) (PDF) (Map). Pennsylvania Department of Highways. 1940. Archived from the original (PDF) on March 11, 2016. Retrieved June 24, 2010.
Official Road Map of Pennsylvania (back) (PDF) (Map). Pennsylvania Department of Highways. 1950. Archived from the original (PDF) on March 11, 2016. Retrieved January 16, 2014.
Official Map of Pennsylvania (back) (PDF) (Map). Pennsylvania Department of Highways. 1960. Archived from the original (PDF) on March 11, 2016. Retrieved January 16, 2014.
Official Map of Pennsylvania (back) (PDF) (Map). Pennsylvania Department of Highways. 1970. Archived from the original (PDF) on March 11, 2016. Retrieved December 16, 2014.
Pennsylvania Official Transportation Map (PDF) (Map). Pennsylvania Department of Transportation. 1989. Archived from the original (PDF) on June 18, 2016. Retrieved November 13, 2019.

whitemarshtwp.org (Global: low place; English: low place)

"History | Whitemarsh Township, PA - Official Website". www.whitemarshtwp.org.

wikimedia.org (Global: low place; English: low place)

commons.wikimedia.org

Bureau of Public Roads & American Association of State Highway Officials (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Washington, DC: United States Geological Survey. OCLC 32889555. Retrieved November 7, 2013 – via Wikimedia Commons.

wikisource.org (Global: 27^th place; English: 51^st place)

en.wikisource.org

Special Committee on U.S. Route Numbering (May 23, 1984). "Route Numbering Committee Agenda" (Report). Washington, DC: American Association of State Highway and Transportation Officials. p. 544. Retrieved November 13, 2019 – via Wikisource.

worldcat.org (Global: 5^th place; English: 5^th place)

search.worldcat.org

Bureau of Public Roads & American Association of State Highway Officials (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Washington, DC: United States Geological Survey. OCLC 32889555. Retrieved November 7, 2013 – via Wikimedia Commons.

Ridge Pike (English Wikipedia)

books.google.com (Global: 3rd place; English: 3rd place)

google.com (Global: 163rd place; English: 185th place)

jimmyandsharonwilliams.com (Global: low place; English: low place)

mapsofpa.com (Global: low place; English: low place)

state.pa.us (Global: 2,762nd place; English: 1,498th place)

dot7.state.pa.us

ushistory.org (Global: 6,795th place; English: 4,866th place)

web.archive.org (Global: 1st place; English: 1st place)

whitemarshtwp.org (Global: low place; English: low place)

wikimedia.org (Global: low place; English: low place)

commons.wikimedia.org

wikisource.org (Global: 27th place; English: 51st place)

en.wikisource.org

worldcat.org (Global: 5th place; English: 5th place)

search.worldcat.org

books.google.com (Global: 3^rd place; English: 3^rd place)

google.com (Global: 163^rd place; English: 185^th place)

state.pa.us (Global: 2,762^nd place; English: 1,498^th place)

ushistory.org (Global: 6,795^th place; English: 4,866^th place)

web.archive.org (Global: 1^st place; English: 1^st place)

wikisource.org (Global: 27^th place; English: 51^st place)

worldcat.org (Global: 5^th place; English: 5^th place)