賓夕法尼亞鐵路
参考資料

Alexander, Edwin P. (1967). The Pennsylvania Railroad. (New York: Bonanza Books).
Atterbury-Bakalar Air Museum (2000), General Atterbury. Retrieved February 21, 2005.
Martinez, Peter (1960). The Children's Illustrated Guide to the Pennsylvania Railroad.
President and Fellows of Harvard College (2004), 20th century great American business leaders — Martin W. Clement. Retrieved February 23, 2005.
Rensselaer Polytechnic Institute (2005). RPI: Alumni hall of fame: Alexander J. Cassatt （页面存档备份，存于）. Retrieved February 22, 2005.
Thomas, William G. "The Countryside Transformed: The Eastern Shore of Virginia, the Pennsylvania Railroad and the Creation of the Modern Landscape" Southern Spaces July 31, 2007.
White, John H., Jr. (Spring (season) 1986). "America's most noteworthy railroaders." Railroad History, Railway and Locomotive Historical Society, 154, pp. 9–15.
↑  . November 10-11-12, 1948  [2007-08-27]. （原始内容存档于2021-02-07）.  请检查|date=中的日期值 (帮助)
↑  .   [2007-08-27]. （原始内容存档于2021-01-22）.
1 2 3  . www.trainweb.org.   [2007-08-24]. （原始内容存档于1999-10-09）.
1 2  . National Park Service Special History Study. United States National Park Service. 2004-10-22  [2007-08-21]. （原始内容存档于2007-07-06）.
↑  Messer, David W. . Baltimore: Barnard, Roberts & Co. 1999. ISBN 0-934118-24-8.
1 2 3  Schafer, Mike; Solomon, Brian. . Osceola, WI: MBI Publishing. 1997. ISBN 0-7603-0379-7.
1 2 3 4  Staufer, Alvin F. . Medina, OH: Alvin F. Staufer. 1993. ISBN 0-944513-10-7.
↑  . National Park Service Special History Study. United States National Park Service. 2004-10-22  [2007-08-21]. （原始内容存档于2007-08-17）.
↑  Alfred D. Chandler, Jr. "The Railroads: Pioneers in Modern Corporate Management". Business History Review 1965 39(1): 16-40. in JSTOR （页面存档备份，存于）
↑  James A.  Ward, "Power and Accountability on the Pennsylvania Railroad, 1846-1878." Business History Review 1975 49(1): 37-59. in JSTOR （页面存档备份，存于）
↑  Harwood, Jr., Herbert H. . Sykesville, MD: Greenberg Publishing. 1990: 22. ISBN 0-89778-155-4. （原始内容存档于2019-07-07）.
↑   (PDF). PRR Research. Philadelphia Chapter Pennsylvania Railroad Technical & Historical Society. January 2005 Edition  [2007-08-27]. （原始内容存档 (PDF)于2013-10-14）.  请检查|date=中的日期值 (帮助)
↑  William W. Kratville, Steam, Steel & Limiteds. Omaha, Neb.: Barnhart Press, 1962.
↑  . www.steamlocomotive.com.   [2007-08-28]. （原始内容存档于2007-08-17）.
↑  Some Classic Trains, Arthur D. Dubin, Kalmbach Publications, 1964, pp.76-95
↑  Doubleday, Russell. . The World's Work: A History of Our Time. August 1902, II: 2455–2462  [2009-07-09].
↑  Walsh, Joe. . Kalmbach Publishing Co. 1999. ISBN 0-89024-293-3.
1 2 3 4 5 6  . Northeast Railfan.net.   [2007-08-25]. （原始内容存档于2021-02-03）.
↑  "The Electrification of the Pennsylvania Railroad from Broad Street Terminal Philadelphia to Paoli." The Electric Journal. Vol. 12, No. 12 (December 1915). (Pittsburgh, PA: The Electric Journal.) pp. 536-541.
↑  , The New York Times, January 31, 1934  [2012-12-30], （原始内容存档于2014-02-27）
↑  . Pennsylvania Railroad Electrification. www.railsandtrails.com.   [2007-08-25]. （原始内容存档于2012-09-08）.
↑  . National Park Service Special History Study. United States National Park Service. 2004-10-22  [2007-08-21]. （原始内容存档于2007-08-17）.
↑  . National Park Service Special History Study. United States National Park Service. 2004-10-22  [2007-08-21]. （原始内容存档于2007-08-16）.
↑  . National Park Service Special History Study. United States National Park Service. 2004-10-22  [2008-03-04]. （原始内容存档于2007-07-06）.
↑  Some Classic Trains, Arthur D. Dubin, Kalmbach Publications, 1964, pp.76-77
↑  Some Classic Trains, Arthur D. Dubin, Kalmbach Publications, 1964, p.82
↑  The Pennsylvania Railroad 100th Annual Report, 12 Feb 1947, pg. 1
↑  U.S. Federal Railroad Administration, Washington, DC. "Northeast Corridor Main Line." （页面存档备份，存于） Accessed 2011-11-15.
1 2 3 4 5 6 7  . Rivanna Chapter National Railway Historical Society Charlottesville, Virginia. January 15, 2006  [2007-08-31]. （原始内容存档于2007-09-30）.
↑  Fischer, Ian S. . Morning Sun Books.
1 2  . Roy's Super Toy Shop.   [2007-08-26]. （原始内容存档于2007-09-29）.
↑  . Philadelphia Chapter Pennsylvania Railroad Technical & Historical Society.   [2007-08-24]. （原始内容存档于2007-03-09）.
1 2  . Steam Locomotive.com. February 8, 2007  [2007-08-31]. （原始内容存档于2007-09-27）.
↑  紐約中央鐵路
1 2  . Commonwealth of Pennsylvania.   [2007-09-01]. （原始内容存档于2007-08-30）.
↑  James, William.  43. Kutztown, Pennsylvania: Kutztown Publishing. Winter 2010.  |journal=被忽略 (帮助); |issue=被忽略 (帮助)
↑  Schafer, Mike; Solomon, Brian. . Voyageur Press. 2009. ISBN 0-7603-2930-3.
1 2  . www.ztrains.com.   [2007-08-26]. （原始内容存档于2007-09-28）.
↑  . The Gauge Magazine. (Volume 1 Issue 3 — April 2005)  [2007-08-19]. （原始内容存档于2007-05-18）.  请检查|date=中的日期值 (帮助)
↑  Hall Construction Co., Howell, NJ. "NJ Transit - Newark Penn Station Improvement Program." （页面存档备份，存于） Accessed 2011-11-15.
↑  Grynbaum, Michael M. . New York Times. 2010-10-18  [2013-01-01]. （原始内容存档于2020-09-30）.