I am looking for information about which bomb groups took part in the raid on the then Marienburg 09 April 1944 (today Malbork). I was able to establish that 91 BG (A) and 303 BG (C) participated in it. Due to the number of planes that took off for the mission, there was at least one more Bomb Group there. If anyone could help me, I would be grateful.
http://www.303rdbg.com/missions.html
There is link to 303 BG site with phots from Airstrike.