Description:Negro American Baseball League President J.B. Martin autographed letter and photograph. Letter is typed on Negro American League stationary as sent to Pollock by long time President Dr. J.B. Martin and has been signed as such in blue ink: EX. The lot also includes a vintage 7"x9" image of Pollock with J.B. Martin signed, "To my friend Syd Pollock J.B. Martin" in black fountain pen. Signature rates 8 out of 10 and the salutation has some fading: VG-EX. Includes LOA from JSA, vintage J.B. Martin business card, and letter of provenance from the Pollock family.