1948 Supermen of American Secret Code Book
Part of your 1948 club membership into the Supermen of America included this doubled sided code folder. Available only through DC Comics it was printed in blue ink and folds up like an envelope. Great early image of Supes busting chest chains on the front. The reverse side laid out the complex substitution code systems for nine planets. It's actually difficult to follow because the lettering was so tiny. The folding flap has the name of its original owner from Brooklyn, NY. Size: 8¾" x 5½" folds up to 3½" x 5¼".
Price Sold: $ 35