RARE Book Dept, *XG +321 9 no.17T
CIPHER AND TELEGRAPH CODES.
Pickering, John, 1777-1846.
A lecture on telegraphic language; delivered before the Boston Marine Society, February 5, 1833. By John Pickering.
Boston: Published by Hilliard,Gray and Co. 1833.
32p. 2pl. 22.5cm.
Inscribed: Hon. Edward Livingston with the respects of the Author.
= MB e@.