This is an original, vintage, booklet, "QUIEN ES QUIEN", in Spanish, a.k.a. "Who's Who", in the Mexican Professional Baseball League, with the cover showing a photo of the legendary HOF hitter, ANGEL CASTRO, for many, "The best Mexican Player Ever", dated 1952. 

The RARE booklet has 96 pages filled with photos  records, anecdotes, reportages and a GREAT article on the legendary Cuban HOF player, MARTIN DIHIGO, during his playing time in the Mexican Professional  Baseball League.     

It's in VERY GOOD ++ condition and measures 5 3/4 x 7 1/2  inches.