Notes written with the collaboration of Richard Weiss. Roger Howe ; with the collaboration of Allen Moy. Dieter Schmidt ; with the collaboration of Lee Seldon. Theodore M. Bernstein, with the collaboration of Jane Wagner. John Richardson with the collaboration of Marilyn McCully. William A. Hachten ; with the collaboration of Harva Hachten. Roderick E. McGrew, with the collaboration of Margaret P. McGrew. Ming K. Chan, editor, with the collaboration of John D. Young. Edited by P. Zuman, with the collaboration of I. M. Kolthoff. Translated and rev., with the collaboration of the author, by G. H. Jenkins.