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