[William Ballard Preston, half-length portrait, nearly facing front]

Whig Congressman from Virginia, 1847-1849; Secretary of the Navy, 1849-1850.Identification from engraving by Ritchie in The American Review, Sept. 1849, frontispiece.Scratched on back of plate: 439; Preston.Original served by appointment only.Produced by Mathew Brady's studio.Transfer; U.S. War College; 1920. (DLC/PP-1920:46153).Forms part of: Daguerreotype collection (Library of Congress)