Irving Kahn Passes Away at 109, from anonymous
"Irving Kahn, Investor, Who Profitted in '29 Crash, Dies at 109":
Mr. Kahn was a value investing icon who served as a teaching assistant for Ben Graham and worked on the classic tome Security Analysis and the original edition of The Intelligent Investor.
He was still working a few days a week at 109 years old at the firm he founded back in 1978.