Promise for a Better City (1944-1964) - Philadelphia: The Great Experiment. This video documentary was produced by Sam Katz for History Making Productions. It's used here on Old Images of Philadelphia by permission. | Old Images of Philadelphia

Awakening (1900-1920) - Philadelphia: The Great Experiment. Video Documentary Produced by Sam Katz for History-Making Productions. Video used with permission for this Old Images of Philadelphia page. | Old Images of Philadelphia

The Floodgates Open (Pilot Episode) - Philadelphia: The Great Experiment. This video documentary is produced by Civic Entrepreneur Sam Katz and his staff at History Making Productions. This documentary is used with special exclusive permission here at Old Images of Philadelphia and copyrighted by History Making Productions. | Old Images of Philadelphia

#OTD in 1984, "The Philadelphia Experiment" premiered. The movie is based on an alleged experiment conducted by the U.S. Navy during WWII to make ships invisible to radar. According to conspiracy theorists, the USS Eldridge briefly vanished and the crew went mad. #MovieMonday | U.S. Naval Institute

The Philadelphia Experiment & Time Travel: Nikola Tesla's Connection | GAF TV