Did your father overlap with Freeman Dyson who was at the IAS around the same time (1948)? Or perhaps through JASON?[0] If so, did he attend the Dyson lecture

Did your father overlap with Freeman Dyson who was at the IAS around the same time (1948)? Or perhaps through JASON?[0] If so, did he attend the Dyson lecture series on QED? I hope that would be a sufficiently professional topic to be able to relay here. According to Dyson, he gave five lectures in all and Oppenheimer fought him beak and claw until he (Oppenheimer) had to concede. [0] https://www.youtube.com/watch?v=nn0XpyR_sLg&list=PLVV0r6CmEsFzDA6mtmKQEgWfcIu49J4nN&index=68 https://www.youtube.com/watch?v=nn0XpyR_sLg&list=PLVV0r6CmEs... et.seq.