COLUMBIAN CENTINEL, Boston, Feb. 24, 1819  Page 2 has: "The Late Savage Duel" between General Mason and Mr. McCarthy. between General A. T. Mason and his cousin, Colonel John McCarty
The detailed account takes over half a column & offers much detail. There is much about this famous duel on the internet.
Four pages, a bit irregular at the blank spine from disbinding, good condition.