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In this follow-up letter, Lederberg thanked Ephrussi for searching for a manuscript written by Harriett Ephrussi-Taylor, Ephrussi's late wife. With this letter, Lederberg enclosed various excerpts from the manuscript with the hope that it would aid Ephrussi in any further search for the document. Ephrussi-Taylor worked in Avery's lab for several years during the mid-1940s before moving to France shortly after her marriage to Ephrussi. Ephrussi-Taylor died in 1968 from cancer. On the bottom of the letter, Lederberg added a handwritten note: "Boris--I am sure this king of digging into the past must carry some pain, but I hope this is also ameliorated by the respect and regard for Harriett which it substantiates. You know I have only the warmest feelings for you."