Schuster, M. L. (1940). A treasury of the world's great letters from ancient days to our own time: Containing the characteristic and crucial communications, and intimate exchanges and cycles of correspondence, of many of the outstanding figures of world history, and some notable contemporaries. Simon and Schuster.

Schuster, M. Lincoln. A Treasury of the World's Great Letters from Ancient Days to Our Own Time: Containing the Characteristic and Crucial Communications, and Intimate Exchanges and Cycles of Correspondence, of Many of the Outstanding Figures of World History, and Some Notable Contemporaries. Simon and Schuster, 1940.