Two national charities have launched a campaign to find a pair of Birmingham playing fields donated to the city to ensure they are protected from housing development.
The Carnegie UK Trust and Fields In Trust, through the #FieldFinders campaign, are searching for 900 lost playing fields across the country which were established between 1927 and 1935 and it is thought two are in Birmingham.
Donated by the Carnegie Trust, only the towns and cities was centrally recorded, not the exact addresses, and local records have been lost.
Douglas White, head of advocacy at Carnegie UK Trust, said: "When these grants were made, it was a significant sum of money for outdoor recreational spaces across the UK.
"A requirement of the grant was that the playing fields should remain public areas for the benefit of the community in perpetuity.
"We want to find as many of these fields as possible and ensure they remain legally protected for the local community."
Each confirmed location, where legal protection can be added, will then be given the chance to win one of two £5,000 prizes to make improvements to facilities such as children's play areas.
Kathryn Cook, of Fields in Trust, added: "Many playing fields in built up areas offer the only green space and safe playing area for children and families.
"They are places to relax, play sports or hold community events. Ensuring they are around for future generations is an utmost priority."
She said they needed the help of communities to find the fields and protect them.
Anyone with evidence or knowledge of the trust's fields is asked to send the information via the Fields in Trust website by August 31.