President of Yale University and the seventh Commissioner of Major League Baseball (1938-1989). TLS signed “A. Bartlett Giamatti,” one page, 7 x 6.75, Yale University letterhead, June 24, 1986. Letter to Stephen Adamson, in full: "Thank you so much for your gracious letter. I am pleased to enclose an autographed photograph, and I am delighted to be a part of your baseball-autograph collection." In fine condition. Encapsulated in a PSA/DNA authentication holder.
