Otago University are on the hunt to find the owners of photos found left in a building on their Dunedin campus.
Two black and white photographs were found in the Richardson Building in an old office.
"Do you recognise these photos, or the people in them?" a post on University of Otago Twitter post reads.
"We've tried asking previous occupants, but no luck so far! Can you help?"
The area was once used as the Hocken Library Collections.
One of the photos show three children standing in front of a bush, and the other shows a boy and a girl in formal wear.