1Gideon Fitz to Thomas Jefferson, 10 June 1810 (Jefferson Papers)
Fitz, Gideon; invents windmill [index entry]
2Gideon Fitz’s Drawing of his Windmill, [ca. 10 June 1810] (Jefferson Papers)
Fitz, Gideon; invents windmill [index entry]
3Gideon Fitz to Thomas Jefferson, 20 June 1810 (Jefferson Papers)
Fitz, Gideon; invents windmill [index entry]