. "1981Z"^^ . . "Hayden, Stone & Co."@en . "Hayden, Stone & Co. was a major securities firm founded in 1892 by Charles Hayden and Galen L. Stone. The firm was acquired by Cogan, Berlind, Weill & Levitt in 1972 and was part of what ultimately would become Shearson/American Express in 1981."@en . . . "1892Z"^^ . . . . "Acquired in 1981 byAmerican Express"@en . .