"Air Heroes Stamp Album" 8-page album measures 5x6.75" and is complete w/set of four 3x4" stamp sheets for mounting in album. Each sheet has four different stamps for a total of 16 featuring aviation hero portraits including - Frank Hawks, Maj. Doolittle, Adm. Byrd, Amelia Earhart, The Wright Brothers and others. Album pages have biography caption for each pictured individual. 1939 Skelly Oil premium. Exc./NM album w/NM/Mint stamps. Comes w/two 1947 newspaper ads showing Captain Midnight Spy-Scope and Shake-Up Mug. Fine-VF. "Captain Midnight's Secret Squadron Official Secret Handbook" measures 3.5x8.5" w/inside text including "Super Secret Master Code - Flight Commander Sign." Handbook has front cover "Warning! Confidential Information For Flight Commanders Only!" text. Inside has Flight Commander's Pledge and ideas on how to organize a Secret Squadron Club. Inked name on front in provided area. Scattered aging to front cover. Fine. 6x9" paper "Certificate Of Commission" has same inked name on provided line. Horizontal fold as issued w/additional vertical fold at center. Pinhole and small tear at top center. Fine. Rare. Both were issued c. 1955-1956.