HISTORICAL NOTES: Although salads are well documented at Monticello, the only two recipes for dressings in the family manuscripts appear to postdate Jefferson's death by some thirty years. Given that Jefferson favored imported olive oil and wine vinegar, the classic seems a likely staple at Monticello's table, prepared tableside with oil and vinegar brought to the table in handsome cruet sets. (One such set so captured Jefferson's attention in Germany that he sketched the clever design in his notes, and a set associated with the Trist family is part of the Monticello collection today.) The basic formula has not significantly changed. The proportions are of necessity approximate: they depend on the strength of the vinegar, the quality of the oil, and the delicacy of the salad greens, but the reader can confidently start with 1 part vinegar to 3 parts oil, adding more oil as needed to taste.