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^[[SP A-1]] 28 April 1966 AIR MAIL Dr. Edwin L. Tyson U.S. Army Tropic Test Center Fort Clayton, Canal Zone Dear Ed: From 9 to 13 or 14 May I expect to be at Barro Colorodo for my first visit to the area. I look forward very much to seeing you at this time to learn something about your program and the possibilities of integrating some of the research between our two organizations. With kind regards and congratulations on the new addition to the family. Sincerely yours, Helmut K. Buechner Assistant Director for Ecology Museum of Natural History