Winner of the 1935 Nobel Prize in Physics, he discovered the neutron for the atomic bomb. ALS, signed “J. Chadwick,” one page, 5.5 x 7, personal letterhead, March 24, 1972. Chadwick complies with an autograph request. In full: “I regret that I have no longer any suitable photograph which I can send in response to your request. I can only write my name on a card and hope that this will do.”; and an ink signature, “J. Chadwick, March 1972,” on an off-white 5.5 x 3.5 personal postcard. In fine condition. RRAuction COA.
