Army engineer who designed and built the ironclad Monitor for the US government. ALS signed 'J. Ericsson,' one page both sides, 7.75 x 9.75 lightly lined paper, July 26. In part: 'There is not the slightest foundation for [?] that Wilcox' 'invention' is an improvement upon the Ericsson Engine. Wilcox employs two cylinders under which the fire is applied, so that in case of accident by our heating a very serious [?] takes place.' In very good condition, with edge toning, particularly to the left, a few small areas of trivial soiling, a small tear to the upper left corner, a strip of adhesive residue on reverse. RRAuction COA.
