A campaign has begun to save a World War Two control tower on a North Yorkshire base which saw thousands of Halifax bombers take to the skies.
The Grade II listed building at the Yorkshire Air Museum, in Elvington, was saved from dereliction 40 years ago.
Museum staff said “vital restoration work” would preserve the “living memorial” for the future.
Founder of the museum Rachel Semlyen said: “We need more than £200,000, of which the museum has only half.”
Ms Semlyen said the tower was rescued in the 1980s to create the museum which opened in 1986.