Hello, I have registered as 'Tikker2'. I am Dutch, verstehe Deutsch et francais, but prefer English as second language. I have lived in Canada for ten years, so English comes natural. I was born in 1934, studied mechanical engineering and worked since 1960 in computers. As of 1970 I worked as a teacher, mainly programming languages. Since my retirement in 1999 I have made my hobby of the study of aircraft constructions, with special emphasis on the period 1920 to 1950 (propeller aircraft). Special interest: the attempts of European and American companies to build airliners capable of crossing the Atlantic. In this connection I have made recently an intensive study of Adolf Rohrbach and his creations. His death in 1939 puzzles me; I have therefore made an entry on the discussion page of the de.wiki Adolf Rohrbach article. You can reach me at: rit_staalman@hotmail.com or on the Talk page --Tikker2 (talk) 17:52, 1 December 2012 (UTC)