Currently alive, at 104 years of age.
1911 – Born on the 4th of July.
1940 – He published a prominent physics textbook, The Modern Theory of Solids.
1949 – He served as a professor of physics at the University of Illinois.
1962 – He served as the president of the National Academy of Sciences.
1968 – He was president of Rockefeller University.
1979 – His retirement from Rockefeller University, Seitz began working as a paid permanent consultant for the R.J. Reynolds Tobacco Company, advising their research program.
1989 – The CEO of R.J. Reynolds, William Hobbs, concluded that "Dr. Seitz is quite elderly and not sufficiently rational to offer advice.
1994 – Seitz authored a report published by the George C. Marshall Institute, of which he was a founder and chairman of the board, entitled "Global warming and ozone hole controversies.
1995 – Seitz signed the Leipzig Declaration.