1 page, 4to., ruled paper, tape on verso." /> PINKERTON, Allan (1819-1884), <I>Chief, U.S.A. Secret Service</I>. Autograph letter signed ("Allan Pinkerton") to S. D. Young, Washington, D. C. 9 June 1862. <I>1 page, 4to., ruled paper, tape on verso</I>. | Christie's