Authorities in Germany are trying to trace relatives of a Derbyshire airman who was shot down during World War II.
Sgt Dennis Heeley, from Chesterfield, was killed in action when his plane crashed in Salzbergen in March 1945.
A memorial to Sgt Heeley is being unveiled at the crash site in November and organisers said they hoped his relatives or descendants would be able to attend the service.
The request has been made by Chesterfield's twin town of Darmstadt.
Sgt Heeley was the son of Fred and Loie May Heeley of Brimington, according to Chesterfield Borough Council.
He was a member of the Voluntary Reserve, belonged to the 514th Squadron of the RAF, and flew in an Avro Lancaster MK III from Waterbeach in Cambridgeshire.
Anyone with information is asked to contact Chesterfield council.