1To James Madison from Thomas Jefferson, 21 June 1813 (Madison Papers)
...1810. As principal engineer to the Virginia Board of Public Works, he conducted a study in...
2Thomas Jefferson to James P. Preston, 28 May 1818 (Jefferson Papers)
Virginia; Board of Public Works [index entry]
3Thomas Jefferson to José Corrêa da Serra, 30 June 1819 (Jefferson Papers)
Virginia; Board of Public Works [index entry]