A treatise upon telegraphs : embracing observations upon the semaphoric system, with a few remarks upon the utility of the marine telegraph flags /
Parker, John R. 1777-1844.
A treatise upon telegraphs : embracing observations upon the semaphoric system, with a few remarks upon the utility of the marine telegraph flags / by John R. Parker. - Boston : Kidder & Wright, 1842. - 16 p. : ill. ; 24 cm.
Cover title.
ca 09002495
Telegraph.
Signals and signaling.
VK389 / .P2
A treatise upon telegraphs : embracing observations upon the semaphoric system, with a few remarks upon the utility of the marine telegraph flags / by John R. Parker. - Boston : Kidder & Wright, 1842. - 16 p. : ill. ; 24 cm.
Cover title.
ca 09002495
Telegraph.
Signals and signaling.
VK389 / .P2