Two Powder Horns And A Powder Measure. One horn is decorated with a map of towns and topographical features in the northern Monadnock region. Writing on horn reads: “Caton Blake/His Horne Maid/Gilmantowne/Anno 1769†and has the carved initials: “CBâ€. Square headed nails. Length overall: 13â€. Another unadorned. Length overall: 10 ½â€. A horn powder measure for flintlock ignition. Length overall: 3â€.