Contents include: W.A.M. Burden "American air transport faces north"; G.B. Cressey "Siberia's role in Soviet strategy"; A.J. Dimond "The Aleutians"; G.B. Grosvenor "The northward course of aviation"; W.A. Pratt "Petroleum in the north"; E.C. Ropes "The Soviet arctic and the future"; V. Stefansson "The North American arctic" and "Arctic supply line."