Church, Alonzo
Baylis, Charles A.
von Wright, G. H.
Kinos, Hilppa
Bernays, Paul
Robinson, Raphael M.
Kleene, S. C.
Fitch, Frederic B.
Ribeiro, Hugo
Nagel, Ernest
Black, Max
Beth, Evert W.
Hempel, Carl G.
Quine, W. V.
McKinsey, J. C. C.
Rosser, J. B. ; Turquette, A. R.
Helmer, Olaf ; Oppenheim, Paul
Berry, G. D. W.
Doss, Raouf