Toronto. Americans like to go BIG! In 1954, a famous Pennsylvanian railway loop called the Horseshoe Curve celebrated its centenary with an amazing night time photograph using 6,000 flash bulbs donated by Sylvania.
The bulbs were connected by some 31 miles of wire. It took six weeks to set up the lighting for this single shot of three trains running through the loop near Altoona PA.
A good friend and PHSC member found this exciting photograph on pp 36, 37 in the November 1st, 1954 edition of LIFE magazine. Have a look!