A box of antique memorabilia discovered by Roseville city workers has been reunited with its rightful owner after police turned to social media for help solving the mystery.

City workers found the box while cleaning up a transient camp last week, the department said. The "carefully preserved" box contained birth announcements, wedding clippings and letters from members of the military serving in the Pacific during WWII.

The Department posted photos of the box on Facebook, and asked users to help reunite the box with its owner. The post had been shared over 1,000 times since going up on Dec. 11, as commenters attempted to research the subjects of the memorabilia for clues to help track down the owner.

The post eventually caught the attention of the owner's relatives.

The box's owner, Connie Hall, had been sorting and cleaning out a storage shed when the box accidentally got put in the wrong pile and was discarded, police said. Police believe someone fished it out of the trash, and it ended up left behind in an abandoned transient camp within a half mile of Connie's home.

Police said the box was still clean, dry and in great condition when it was located.

"We heard from many family historians and extended family members from all over the west coast. We're surprised ancestry.com's servers didn't catch fire!" police said. "Finally the mystery was solved, and we found out the owner was right in our back yard."