00749cam a22002291a 4500001001300000003000400013005001700017008004100034010001700075035002000092040001900112042001200131050001500143100004600158245017300204260003800377300002800415500001700443650001500460650002700475999001700502ca 09002495 DLC20260227111048.0910517s1842    maua          000 0 eng    aca 09002495   a(OCoLC)23764257  aDLCcMoSWdDLC  apremarc00aVK389b.P21 aParker, John R.q(John Rowe),d1777-1844.12aA treatise upon telegraphs :bembracing observations upon the semaphoric system, with a few remarks upon the utility of the marine telegraph flags /cby John R. Parker.  aBoston :bKidder & Wright,c1842.  a16 p. :bill. ;c24 cm.  aCover title. 0aTelegraph. 0aSignals and signaling.  c13917d13917