## Mathematical Formulation of the Quantum Theory of Electromagnetic Interaction (Feynman) WITH Spin Echoes (Hahn) in The Physical Review, Volume 80, Number 3, November 1, 1950, pp. 440-457 (Feynman), pp. 580-594 (Hahn)

Lancaster: American Physical Society, 1950. 1st Edition. FIRST EDITION of Feynman's proof of the validity of his 1949 "reformation of quantum mechanics itself," work that would "elegantly rewrite quantum theory" (American National Biography; Peacock, The Quantum Revolution, 102). In this, the third paper in his pivotal reformulation of quantum mechanics..... More