1From George Washington to Clement Biddle, 6 June 1799 (Washington Papers)
Your letters of the 18th & 21st Ulto have been duly received. In reply to them, so far as it respects the raking machines, I agree perfectly with Mr J. Williams, that they will not answr on Stoney, stumpy, or rough land of any kind, for the reason he has assigned; but I am equally well persuaded, that on level & smooth land (which for the most part my fields are) they would be found useful...