File:1925 - Linden Auto Company - 28 Jun MC - Allentown PA.jpg - Wikimedia Commons

Appendix III, Page p

Dallas Family Dossiers – Investigating the past

The Urban Wilderness

Times Leader 10-01-2011 by The Wilkes-Barre Publishing Company - Issuu

New Orleans Public Service 832 - PA Trolley Museum

Robert Selle – The Trolley Dodger

Allentown park Black and White Stock Photos & Images - Alamy

Trackside around Allentown, PA 1947-1968 with Arthur Angstadt (Digital – Morning Sun Books

Missouri S&T Magazine, Special Edition 1994 by Missouri S&T Library and Learning Resources

Reverend John Sornberger's car

Main Street U.S.A.: 1925, Shorpy Old Photos

Robert Selle – The Trolley Dodger

File:1925 - Wink Motor Company - 5 Dec MC - Allentown PA.jpg - Wikimedia Commons

HawkinsRails - Pennsylvania Trolley Museum Trolleys