1Thomas Jefferson to Benjamin Henry Latrobe, 27 August 1816 (Jefferson Papers)
sundials; and corncob capital base [index entry]
2Benjamin Henry Latrobe to Thomas Jefferson, 28 August 1809 (Jefferson Papers)
sundials; and corncob capital base [index entry]
3Benjamin Henry Latrobe to Thomas Jefferson, 5 November 1816 (Jefferson Papers)
sundials; and corncob capital base [index entry]