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She has posted the photo every year since it was found at Ground Zero.

It shows a bride and groom and their wedding party.

Elizabeth Stringer Keefe tweeted on 9/11 that every year she has posted the photo hoping to return it to its owner.

It was retweeted thousands of times.

Then, something amazing happened.

Keefe tweeted that she found out all six people in the photo are alive and well and that she just spoke to one of them. She is thanking everyone who shared the photo.