19K views · 707 reactions | #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 | Facebook

3.7K views · 69 reactions | Awakening (1900-1920) - Philadelphia: The Great Experiment - Video Documentary. | Old Images of Philadelphia | Facebook

4.4K views · 147 reactions | The Fight (1965-1978) is one of my favorite episodes from the documentary series called "Philadelphia the Great Experiment" produced by Civic entrepreneur Sam Katz and his staff at History Making Productions. This documentary tells you about so many things that you probably didn't know of in Philly and so many things that you did. Please check this out and tell others about it and this page if you haven't done so yet! | Old Images of Philadelphia | Facebook

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