Thursday, April 8th, 2010...4:26 pm

Rare photograph discovered at Houghton

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William James (right) and Paul Ross, pfMS Am 1092 (14)Conservators at Weissman Preservation Center have discovered that a photograph from the William James collection was made with the rare Kallitype process, a predecessor to gelatin silver prints. Read the full story at Harvard College Library News.

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