October 13, 1961 Miss Jean H. Breig Managing Editor Dorrance & Company, Inc. 1715 Walnut Street Philadelphia 3, Pennsylvania Dear Miss Breig: The proofs to Mr. Tassi's book arrived while | was out of town and this has been my first Opportunity to reply to your letter of September 21. The outline and first page of this book betray such errant nonsense that | could not Justify taking any further time to searching the book for whatever truths It might contain. Please advise me as to the disposition of the proof pages. Yours sincerely, Joshua Lederberg Professor of Ganetics