A US family kept what they thought was an old piece of tarpaulin in a barn for decades. But when Tony Breckenridge recently pulled it out of a box to go camping he discovered it was a mural.

The family cannot read the signature and are trying to identify the artist. The mural was displayed over the weekend at the Skagit County Fair in Mount Vernon.

Fair organiser Brian Adams estimates the mural was painted in the 1940s. He says it appears to be in the style of social realism popular before the Second World War.

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