ALS signed “Warren E. Burger,” one page, 5.75 x 7.75, Supreme Court of the United States letterhead, no date. Letter to an unnamed senator. In full: “Many thanks for your book. I now begin my ‘summer reading.’ I enclose my more modest recent writing—I suspect you will agree!” In fine condition, with a slight brush to beginning of signature and office stamps along two edges. RR Auction COA.