An invention of engines of motion lately brought to perfection whereby may be dispatched any work now done in England or elsewhere (especially vvorks that require strength and swiftness) either by wind, water, cattel or men - Dymock, Cressy (Printed by I.C. for Richard Woodnoth, 1651)
Consists of two unsigned letters addressed to Hartlib. Probably written by Cressy Dymock. Cf. Halkett & Laing (2nd ed.); BM. - Reproduction of original in Harvard University Libraries. - Wing, D2971