RAMSEY NORMAN: (1915-2011) American physicist, Nobel Prize winner for Physics, 1989. Ramsey was an important member of the Manhattan Project and, as chairman of the Weapons Committee, was tasked with determining the characteristics of the aircraft needed to deliver and drop an atomic bomb. An excellent T.L.S., Norman Ramsey, one page, 4to, Cambridge, Massachusetts, 11th July 1960, to Lieutenant General Leslie R. Groves, on the printed stationery of the Lyman Laboratory of Physics at Harvard University. Ramsey expresses his delight at having received Groves's congratulatory letter, adding that he also appreciated 'your praise of my work at Los Alamos' and continuing 'In this connection I should also like to thank you again for the excellent support which you gave to me in our work at Los Alamos and Tinian. I am afraid that we made a number of difficult requests of you but you always supported them both vigorously and effectively. I can well remember my pleasant surprise in discovering that you had succeeded in extracting from the Air Force one of their very first B-29's. In fact you may not realize that the first B-29 ever to appear at Wright Field was the one for the Manhattan District project. For a long time we had a high priority with the Air Force solely on the basis of the fact that any project that could extract a B-29 must be of greatest priority'. In concluding Ramsey conveys his hope that, if Groves is in Cambridge, 'several of the old Los Alamos group here - like Ken Bainbridge, Francis Birch, George Kistiakowsky, etc., could get together with you for lunch or dinner'. A letter of fine content and exceptional association. Some very light, extremely minimal wrinkling to the upper edge, otherwise EX Leslie R. Groves (1896-1970) American Lieutenant General with the United States Army Corps of Engineers who directed the Manhattan Project during World War II and was responsible for J. Robert Oppenheimer's appointment to the Los Alamos laboratory. Groves is portrayed by actor Matt Damon in the film Oppenheimer (2023). Kenneth Bainbridge (1904-1996) American physicist who was the director of the Manhattan Project's Trinity nuclear test in July 1945, remarking to J. Robert Oppenheimer immediately after the event 'Now we are all sons of bitches'. Bainbridge is portrayed by actor Josh Peck in the film Oppenheimer (2023). Francis Birch (1903-1992) American geophysicist, part of the Manhattan Project team during World War II, responsible for the design and development of the gun-type nuclear weapon known as Little Boy. George Kistiakowsky (1900-1982) Ukrainian-American physical chemist who participated in the Manhattan Project by carrying out research into implosion. Kistiakowsky is portrayed by actor Trond Fausa Aurvag in the film Oppenheimer (2023).