evidence: Washington and the New Agriculture [...] On 6 Aug. 1786 Washington sent him a grateful response. "Agriculture has never been amongst the most favorite amusements of my life, though I never possessed much skill in art, and nine years' total inattention to it, has added nothing to a knowledge which is best understood from practice; but with the means you have been so obliging as to furnish me, I shall return to it (though rather late in the day) with hope & confidence" (Rosenbach Foundation, Philadelphia). Washington ask Young to sent him two plows with extra shares and coulters and the best varieties of cabbage, turnip, sainfoin, winter vetch, and ryegrass seeds, as well as any other grasses which might seem valuable. One of Washington's great preoccupations, during his whole career in agriculture, was finding the right crops for the soil, climate, and practical needs of his Mount Vernon establishment. His determination to throw off the bondage of single-crop farming seemed at times almost too dogged. The number of field crops he raised, attempted to raise, or at least experimented with on a small scale is well above sixty. In a set of "Notes & Observations" he kept for 1785-86 (George Washington Papers, Library of Congress) he mentions planting barley, clover, corn, carrots, cabbage, flax, millet, oats, orchard grass, peas, potatoes, pumpkins, rye, spelt, turnips, timothy, and wheat.