Preface. 1. History. Contributors: J.H. Christenson, J.W. Cronin, V.L. Fitch, L. Landau, T.D. Lee, R. Oehme, R. Turlay, C.N. Yang. 2. CP Violation in K° Decay. Contributors: V.V. Barmin et al., J.S. Bell, H. Burkhardt et al, C.P. Enz, C. Geweniger et al., P.K. Kabir, R.R. Lewis, J. Steinberger, T.T. Wu, C.N. Yang. 3. Models of CP Violation. Contributors: J. Bernstein, G.C. Branco, N. Cabbibo, H.-Y. Cheng, G. Ecker, W. Grimus, T.D. Lee, R.N. Mohapatra, L.B. Okun, J.C. Pati, J. Prentki, M. Veltman, S. Weinberg, L. Wolfenstein. 4. The Standard Model. Contributors: I.I. Bigi, J. Ellis, M.K. Gaillard, F.J. Gilman, B. Guberina, M. Kobayashi, P. Krawczyk et al, T. Maskawa, D.V. Nanopoulos, R.D. Peccei, A.I. Sanda, M.B. Wise, L. Wolfenstein. 5. Neutron Electric Dipole Moment. Contributors: I.S. Altarev et al., R.J. Crewther et al, I.B. Khriplovich, A. Nelson, R.D. Peccei, E.M. Purcell, H.R. Quinn, N.F. Ramsey, J.H. Smith, A.R. Zhitnitsky.