He was also an honorary editor of "Algebra Universalis".
== Kasnejša leta ==Tarski je predaval na University Collegeu v Londonu (1950, 1966), na Inštitutu Henri Poincaré v Parizu (1955), na Miller Institute for Basic Research in Science v Berkeleyju (1958-60), na University of California v Los Angelesu (1967) in na Papeški katoliški univerzi v Čilu (1974-75).