Neurologist and grandson of Alexander Hamilton, best known for appearing in over one hundred murder trials where insanity was a possible defense—including the high profile cases of presidential assassins Charles Guiteau and Leon Czolgosz. ALS, one page, 5.5 x 6.75, personal letterhead, November 17. Letter to an admirer. In part: “My book has been a labor of love undertaken with some hesitancy, but I am amply repaid by such letters as yours and the many kind reviews. I have come across many of your ancestor Dayton’s letters to my grandfather & will try to find you one when I next go to my country house.” In fine condition, with a block of toning to the upper right border. RR Auction COA.