Businesswoman (1834–1916) known for being the first American woman to make a substantial impact on Wall Street. Ink signature, “Hetty H R Green,” on an off-white 3.75 x 1.75 slip clipped from the closing of a letter which she signed as President of the Westminster Company. Finally realizing that the volume of her financial affairs had grown too great for her to handle alone, the elderly Green founded the Westminster Company in 1910 with her son, enabling him to assume active management of her massive holdings. In fine condition, with a light vertical fold through a single letter of signature, a bit of light toning, and a tape remnant to reverse. RR Auction COA.