1. ‘We’ as used in the text is a time dependent variable. At the outset it includes John Dunning. When work began at the National Bureau of Standards it was augmented by Jim Leiss, Jack Lightbody and Sam Penner. Two Virginia Tech students were involved early on: Garlan Grammer and Don Stevens. The remaining authors of Ref. 2 join in as the experiment progressed.
2. L.S. Cardman, J.W. Lightbody, Jr., S. Penner, S.P. Fivozinsky, X.K. Maruyama, W.P. Trower and S.E. Williamson, Phys. Lett., 91B, 203 (1980) and Phys. Rev. to be published.
3. R.C. Barrett, S.J. Brodsky, G.W. Erickson and M.H. Goldhaber, Phys. Rev., 166, 1589 (1968).
4. T.T. Bardin, R.C. Cohen, S. Devons, D. Hitlin, E. Macagno, J. Rainwater, K. Runge, C.S. Wu and R.C. Barrett, Phys. Rev., 160, 1043 (1967).
5. D. Frèrejacque, D. Benaksas and D. Drickey, Phys. Rev., 141, 1308 (1966);