comprising Leica News and Techniques (No. 1 to 10, 1935, No. 38, 1939, published by E. Leitz London), Leica Annual 1937 (Henry M. Lester, Galleon Press) The Leica Camera (British Intelligence Objectives Sub-Committee, 1946, Monark reprint 1995), a 1941 Leitz Wetzlar book published on Ernst Leitz II 70th birthday, The Source of Today's Thirty-Five Millimeter Photography (Emil G. Keller, 1986-89), Dr. Paul Wolff Arbeit (1937 book and two copies of a Special Supplement 1999, Leica Historical Society of America), a 1849-1949 Ernst Leitz Optical Works book and three books published by Leica Historica in German