Ever since Trevee Green found two old pictures outside her home in Beavercreek, Oregon, she's been part of a group effort to return the mysterious century-old family photos to their rightful owners.
A few weeks ago, Green went to check her mail and saw two photos lying at the bottom of her mailbox. She picked them up and "realized they were really, really old" but "in perfect condition," Green told ABC News.
"They were in pristine condition. Like they were just printed yesterday," she said.
"From how they were packaged, and obviously the era, the clothing they were wearing, it looked like, my guess, was late 20's to early 30's," she said. "I was really surprised because not a lot of pictures from that era have made it this long. And I picked it up and I got goosebumps right away. I almost kind of felt bad that someone had misplaced or lost these photos."
Green knew she had to track down the family, so she posted photos of the two pictures to Facebook.
But "I really didn't get anywhere until I met up with Alan," she said, referring to her neighbor Alan Kirkwood, who had also found photos from the mystery family.
"There was stuff in my driveway and I picked it up. It was a couple of photographs," Kirkwood told ABC affiliate KATU in Portland. "So, I went out to my driveway and there was all these photographs up and down the street, just laying in the ditch, like they blew out of somebody's truck or something."
After Green met up with Kirkwood she realized his pictures held the key to finding the family.
"My two photographs don't have any writing on them. But Alan's photos, not all are dated, but probably 60% are dated with names and locations," she said.
One of the photos Kirkwood found dated back to 1917, Green said.
The names, dates and locations helped Green, Kirkwood and one of Green's friends analyze the photos. After conducting research online and building up the strangers' family tree, they learned that among the people pictured in the photos, a woman named Ruth appeared to be the youngest.
And upon further research, Green said she discovered that Ruth had a daughter named Linda, and "then we searched her name around town and found out where she worked, and I found her address to her home."
She said she plans to meet with Linda and Linda's husband on Friday.
"I love history and I'm a photographer myself. So photos -- family photos especially -- are very important. I don't have any of my family and I wish I had [them]," Green said. "It broke my heart ... knowing that this person, who once had these precious memories, no longer has that. So they need to get back to the original owner. I would want someone to do that for me."