OED has 1842 "Mississippi Arguments" from the New York _Sun_, in the Pennsylvania | Gettysburg | The Adams Sentinel | 1837-03-13 p. 1 col 2. "A tall, lank, bilous looking Missisippian was at this moment opening his trunk very carefully, and taking therefrom a brace of pistols, placing them in his pockets, and a Bowie knife in his bosom, by was of a <i> Breast Pin </i>."