ROBERT ERSKINE Autograph Letter Signed RobtErskine to John C

Sale 2492 - Lot 30

Unsold

Estimate: $ 150 - $ 250

ROBERT ERSKINE. Autograph Letter Signed, "Rob'tErskine," to John Calecroft, offering to design a water pump for his well. 1 page, 4to; folds, minor loss to lower corners. London, 27 June 1765

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Additional Details

". . . Mr Cole who is appointed to make my machines [is] desiring . . . advice about raising water from a Well . . . . With the Centrifugal Engine water can only be raised 30 Feet at a lift . . . other methods may be put in practice at a less expence. . . . if therefore you Chuse to employ me I will wait on you . . . ."

Robert Erskine (1735-1780) was a Scottish hydraulic engineer and geographer who came to the U.S. in 1771, served as captain in the New Jersey militia at the start of the Revolution, and later became geographer and surveyor-general to the Continental Army, whose maps helped George Washington to victory.