Circular
U.S. Mint Circulars, U.S Mint (1870)
Periodical Summary
Treasury Department circular mandating the use of specific ink types. Signed by Secretary of the Treasury George S. Boutwell.
From the National Archives & Records Administration (NARA), record group 104 (U.S. Mint), entry 1 (general correspondence), box 87. Courtesy of Roger Burdette.
Roger Burdette comments "Certain inks were specified because they performed better in presscopies and did not have an acid base that ate through paper."
