Jared Cohen, a Google executive and historian, with a lock of John F. Kennedy's hair that is part of his extensive presidential hair collection. Alan Chin for Insider Jared Cohen, a Google executive and historian, is an avid collector of hair from US presidents. Interest in the presidential hair market surged during the pandemic, as buyers, cooped up at home, splurged on collectibles. The most valuable Custer is Abraham Lincoln's. Shorn off on the night of his assassination, it sold for $81,250. A few weeks ago, Jared Cohen, a Google executive, made the 90-minute trek from his Manhattan apartment to