Archive film marking 'The End of the El' - the elevated section of track in New York that ran through Manhattan - made around 1955 just as it was about to be dismantled. This is overlaid with a location in Second Life, Chinatown New York 1920s-1940. This was assembled by the historian Jo Yardley and as a part of 'Time Portal'.
"The End of the 'El", was in The News Magazine of the Screen (Vol. 5, Issue 10; Summer Review 1955), Warner Pathé News. In the public domain and available at Internet Archive: archive.org/details/NewsMaga_5
Chinatown New York 1920s-1940s is a region of the virtual world of Second Life: maps.secondlife.com/secondlife/Time%20Portal/159/122/1930