Insull, Samuel - Autograph Letter Signed to Margaret Sheridan 1933

British-born American business magnate, innovator and investor (1859-1938), who built the Chicago Civic Opera House in 1929. Autograph letter signed, dated in 1933, addressed to the Irish soprano Margaret Sheridan (1889-1958). 3 pages, (on two double-sided 8.5 x 10.75 size documents), small brown stain on bottom of the first page (outside of the text area), otherwise in excellent condition.