Rare, early signature of the first Puerto Rican in the majors and the man they named the stadium after. One of 11 signatures on a Puerto Rican Delegate’s sign from the 1935 Pan American Games. Great historical research comes with it as well from the National Olympic Committee. Signatures are NRMT; Hiram has added his hometown in parenthesis along with his signature. Card is 6 x 8”. Possibly the earliest known Hiram Bithorn signature.