1Isaac Briggs to Thomas Jefferson, 7 May 1816, with Postscript by Mary B. Briggs (Jefferson Papers)
patronage; letters of application and recommendation to TJ [index entry]
2Isaac Briggs to Thomas Jefferson, 9 May 1817 (Jefferson Papers)
patronage; letters of application and recommendation to TJ [index entry]
3Isaac Briggs to Thomas Jefferson, 15 May 1817 (Jefferson Papers)
patronage; letters of application and recommendation to TJ [index entry]
4Isaac Briggs to Thomas Jefferson, 21 May 1817 (Jefferson Papers)
patronage; letters of application and recommendation to TJ [index entry]