Grosset and Dunlap. Copyright 1939. Print run Carpentieri-coded 1945A-12. Cover art by Paul Laune. Author was John Button, using the Stratemeyer "Dixon" pseudonym. #18 in the series. Brown book in very good condition with orange Gretta endpapers, plain frontispiece. Original 25 chapters. No internal book titles list. Tanned but not brittle war-time paper (in effect through 1948). No writing. Sturdy binding and hinges without tracking. Excellent corners. Yellow spine and "The Hardy Boys" supra-title in script. Very nice dust jacket with very minor edgewear, nice color retention despite some light surface abrasion. "PCJ" and "110-150" on front flap. Front flap last title is five volumes later, The Melted Coins. Rear flap lists to Don Winslow #4 Saves the Secret Formula. Rear of jacket lists 26 aviation titles. Book is now protected in removable mylar covering. (RHB-18)