1949 Philadelphia Bulletin Athletics/Phillies #NNO Mike Guerra (Fermín Guerra). This is a card from the 1949 Philadelphia Bulletin “Fun Book” baseball photo series, a regional newspaper insert set featuring players from both the Philadelphia Athletics and Philadelphia Phillies.

The set consists of about 59 unnumbered black-and-white player “cards”, printed in sections of the Sunday Bulletin between May and July 1949. Each entry shows a sepia or black-and-white portrait on one side with biographical text on the other, designed to be cut out and mounted by readers. Cards are approximately 4½" × 3?" cut-out size and intended for folding/cutting and pasting into homemade albums. “NNO” = No Numbered Official designation.