Autograph letter signed

by John Ericsson

$1,250 · Offered by Thorn Books

1859. Very good. Item #14895 To an unknown recipient, complaining of poor workmanship preventing the engines from attaining maximum speed. Ericsson invented numerous mechanical devices, including the screw propeller, a locomotive engine, and an armored ship with a revolving gun turret. The Monitor, built on this plan, involved the Merrimack in the first naval engagement between ironclad warships 1862 . In a protective

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