By BBC
Glass negatives bought for just $45 (£34) have been proven to be the work of iconic photographer
Ansel Adams and are now worth $200m, it is claimed.
Painter and collector Rick Norsigian says he bought 65 negatives in 2000.
After years of trying to prove their origin, his lawyer now says experts have concluded "beyond reasonable doubt" that they were
Adams' work.
The family of the landscape photographer, who died in 1984, have called the matter "unfortunate fraud".
Mr Norsigian said he spent years trying to verify the photos, which were believed to have been destroyed in a 1937 fire at Adams' studio in Yosemite National Park.
In the years after 1937 Ansel Adams became one of the world's best-known photographers, with original prints of his images of the American West, including Yosemite, selling for huge sums.
His images were produced with darkroom techniques that emphasised shadows and contrasts in his black-and-white images.
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