Rejected Study for Arm of Abraham Lincoln

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More than a century ago, sculptor Augustus Saint-Gaudens and his assistants used a few dabs of plaster to seal shut roughly two dozen sculpture molds. The molds were then put into storage for safekeeping. Since then, the molds have passed from the Saint-Gaudens family to the non-profit Saint-Gaudens Memorial to the National Park Service, and also survived a catastrophic studio fire in 1944. Through the years, the identities of many of these sealed molds had been lost. Until now.

The National Park Service at Saint-Gaudens National Historic Site and the Department of Diagnostic Radiology at Dartmouth-Hitchcock’s medical center in Lebanon, New Hampshire, have developed a partnership to non-invasively peek at what these molds contain. With computed tomography (CT) scanning, radiologists were able to scan the open interior spaces of these molds and then extrapolate the negative space into a positive digital image of what these molds would have been used to cast.