Two-term U.S. Representative (1816–1906) who later became a multimillionaire financier. Sage is credited with originating the system of ‘puts and calls’ in the buying and selling of stock. ALS, one page, lightly-lined, 5 x 8, May 10, 1886. Letter to Isaac Cate, president of the Iowa Central Railway. In part: “I am in receipt of…enclosure of S. M. deposition. I fully agree with you as to the propriety of not sending for Mr. B but let the matter drift along and we can judge later on what is best to do. You can rely on me as not talking about this matter.” Some light creases and wrinkles and some light mirroring of ink, otherwise fine condition. RRAuction COA.