Andrew Carnegie retired in 1901 at the age of 66 as the world's richest man. During his lifetime he gave away 90 percent of his fortune so that by the time he died he'd given away more than $350 million, equal to more than $3 billion in 1996 dollars.
CREDIT: Davis & Sanford, N.Y. "Andrew Carnegie, Three-Quarter Length Portrait, Standing Behind Chair, Facing Front." ca. 1905. Prints and Photographs Division, Library of Congress.
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