You might lock the thread with this one
Rare are people following this thread, more rare are people following this thread which have taken a picture ... 50 years ago, meaning they should have around 70 years old nowadays ...
I can put a picture taken 50years ago (picture of me when i was baby)
But if it's to put a picture taken by someone else ... i don't see the purpose.
It can be a scanned picture you processed to get rid of blemishes or the like. And.... 50 years is not that much - is it (said the 71 year old). If I had said 100 years... that would have been a real challenge... (although easier on the copyright issue when it is not your own image)