My apologies for taking so long to thank you for your reply. Had to chuckle at your referral to' those " experts" who obviously adhere to the age-old practice of "if you don't know the answer, make one up".' Wholeheartedly, agree, that, all too often, this may very well be true. However, in this instance,I received a copy of "Station List of the Army Air Force, 1 June 1945". It gave a listing of the Army Air Forces Base Units; one of which was "3502nd (Tech Sch Helicopter Sch)(AAFETTC) Chanute Field, Ill.This came from the US Army Military History Institute, along with a nice letter suggesting I seek out extant records of the unit. I appreciate any and all help that is given. will continue checking this forum, and, hopefully, learn a bit more.. Although, you say you're not an "expert",you seem to have been a great help to many. Again, many thanks.