Two of the items in this lot come with a Letter of Provenance by Vera Clemente, those two pieces are;1) Circa 1960-70s 5x8" sepia tone photograph of Clemente in his Puerto Rico uniform attributed to his Winter League appearences during the 1960s (Puerto Rican photo credit on verso). 2) 1971-72 Puerto Rico Baseball Federation manual (Image of Clemente on back cover). The other two pieces included in this lot are; 3) Tips on How to Play Winning Baseball by the 1971 World Champion Pittsburgh Pirates booklet. Features advice from 12 players and coaches. 4) 1971  Pittsburgh Pirates two-page road trip itinerary with Roberto Clemente Night in New York.