Abstract:Dr. Emanuel Libman received his medical degree from the Columbia University College of Physicians and Surgeons, and was associated with the Mount Sinai Hospital as a pathologist, and attending and consulting physician. Among the correspondents are Maude Abbott, Ludwig Aschoff, Ephraim M. Bluestone, Albert Einstein, Abraham Flexner, Abraham Jacobi, Charles andWilliam Mayo, Hideyo Noguchi, William Osler, M. Rachmilewitz, Humphry Rolleston, and William H. Welch.