Samuel Goudsmit, an associate of Einstein was on the Robertson Panel.
From:
http://ufologie.net/htm/ruppeltwhoiswho.htm
Hynek, Dr. J. Allen
Dr. Hynek has been the consultant astronomer to Projects Sign, Grudge and Blue Book. I won't say that he's a "believer" but he's darn interested. He has devoted a great deal of his valuable time to the project. He has read almost every UFO report in the Air Force files. In the summer of 1952 he debated with Menzel at the American Optical Society meeting in Boston and blasted Menzel right out of the hall. He sat on the panel in Washington in January 1952 and was very much pro-UFO. Dr. Hynek is Head of the Ohio State Univ. Astronomy Department, Director of the Perkins Observatory and Assistant Dean of the USU Graduate School. He is still working for Blue Book.
Hynek told about his involvement with the Robertson Panel:
"I can remember that day very well...I had very mixed feelings, being among such a group of highly respected and high-power scientists: Dr. Robertson, Chairman of the panel; Samuel Goudsmit, an associate of Einstein; Louis Alvarez, later to win the Nobel Prize; Thornton Page, astrophysicist; and the distinguished Lloyd Berkner."
"At that time, I was somewhat a newcomer and a junior - an associate member of the Robertson Panel. I guess I was somewhat nervous and apprehensive - but also quite interested in UFOs, having spent some four years, at that time, working with Air Force officials investigating sightings."
"I was called in Thursday to that room. The members were seated around a table, a conference table like this one. I sat in the back until it was my turn to speak. During the meeting there were two films of UFO sightings that were of great interest to everyone at the time. One was shot by a Navy officer in Utah and another shot in Great Falls, Montana. The Utah film was to result in over a thousand man-hours of analyzing the phenomena captured on the film. Oddly enough, there wasn't any movie screen, so these films were projected right on the wall."
"After one-thousand hours of analysis on the Utah film...the Navy photograph interpretation labs...concluded that what we saw was not birds, balloons, aircraft, or reflections, but that these were 'self-luminous' unidentified objects. In spite of this conclusion, the panel rejected the Navy's findings and decided that it must have been birds."