1From George Washington to William Thornton, 21 April 1799 (Washington Papers)
Your favor of the 19th is before me, and for the details it contains respecting my buildings in the City, I thank you. As I do for directing the exterior door Cills thereof to be made of Stone. I never attended so closely to the specification of the work, as to know they were, originally, intended to be of Wood; On the contrary, as the Frontispiece was to be of Stone I took it for granted that...