ALS signed “J. Ericsson,” one lined page, 8 x 10, February 20, 1860. Letter to an associate regarding a patent, “I enclose drawing & specifications for the intended Chilian [sic] patent, with the emphatic request that this patent be taken out in the name of the inventor.” In fine condition, with expected folds, some scattered mild toning and a red check near top. R&R COA.