U.S. Route 422 (English Wikipedia)

"Report backs off 422 tolling plan". Daily Local News. Journal Register News Service. October 6, 2011. Archived from the original on January 2, 2013.

dailylocal.com

"Report backs off 422 tolling plan". Daily Local News. Journal Register News Service. October 6, 2011. Archived from the original on January 2, 2013.

Webb, Joseph (June 21, 2020). "History of the Warren Street, West Shore, and Outer Bypasses". GoReadingBerks / Reading Berks History. Retrieved January 28, 2024.

"Report: Tolls not the 'best option' for Route 422". Springfield Sun. Journal Register News Service. October 5, 2011.

"Pennsylvania Highways: US 422". www.pahighways.com. Retrieved January 28, 2024.
"Pennsylvania Highways: US 202". www.pahighways.com. Retrieved October 3, 2023.
"Pennsylvania Highways: Route 422". Retrieved September 29, 2010.^{[self-published source]}

Pennsylvania Department of Transportation (2022). Tourism and Transportation Map (PDF) (Map). 1:475,200. Harrisburg: Pennsylvania Department of Transportation. Retrieved October 1, 2022.

"Pottstown Expressway (US 422)". www.phillyroads.com. Retrieved January 28, 2024.

"Pottstown Council rejects U.S. Route 422 plan". Pottstown Mercury. Archived from the original on March 1, 2012. Retrieved September 29, 2010.

"Rendell looks for Metro funding". Reading Eagle. September 19, 2006. Retrieved October 2, 2023.
Hambright, Brett (December 12, 2010). "Decision near on Route 422 tolls". Reading Eagle. Retrieved December 12, 2010.

"Straight Line Diagrams". Retrieved November 19, 2012.
Ohio Department of Transportation (2019). Official Ohio Transportation Map (PDF) (Map). c. 1:570,240. Columbus: Ohio Department of Transportation. Retrieved October 22, 2022.

Pennsylvania Department of Transportation (2016). Dauphin County, Pennsylvania Highway Map (PDF) (Map). 1:65,000. Harrisburg: Pennsylvania Department of Transportation. Retrieved February 14, 2017.
Pennsylvania Department of Transportation (2016). Lebanon County, Pennsylvania Highway Map (PDF) (Map). 1:65,000. Harrisburg: Pennsylvania Department of Transportation. Retrieved February 14, 2017.
Pennsylvania Department of Transportation (2016). Berks County, Pennsylvania Highway Map (PDF) (Map). 1:65,000. Harrisburg: Pennsylvania Department of Transportation. Retrieved February 14, 2017.
Pennsylvania Department of Transportation (2016). Montgomery County, Pennsylvania Highway Map (PDF) (Map). 1:65,000. Harrisburg: Pennsylvania Department of Transportation. Retrieved February 7, 2017.
Pennsylvania Department of Transportation (2016). Chester County, Pennsylvania Highway Map (PDF) (Map). 1:65,000. Harrisburg: Pennsylvania Department of Transportation. Retrieved February 14, 2017.

"Road project to begin this month". Archived from the original on May 25, 2008. Retrieved March 2, 2008.

Rotenberg, Carl (December 1, 2015). "Two ramps connecting Trooper Road to Route 422 open". The Times Herald. Norristown, Pennsylvania. Retrieved December 7, 2015.