90th Bomb Group

Do you have much information on men who were not part of airplane crews? My father was a T/SGT and worked as a Norden bomb sight technician for the 90th. Would like to find out what if any information you may have on him. I have a copy of "The Jolly Rogers" book published in 1944.
Richard Sherman

All I was able to find was his promotion to Tech order dated October 15, 1945. For some reason the site would not allow me to download a copy of the order. Contact me directly and I will send you the order.
Bob Tupa