<p>“Electrical double layer” (EDL) effects on electrode kinetics are re-gaining increasing attention in various fields. While equilibrium EDLs are assumed in most studies, EDLs can be brought away from equilibrium by electrode reactions. Levich is considered to pioneer the theory of nonequilibrium EDL; however, his 1949 original text has not been translated in the public into English domain, and the translation of the less known subsequent 1959 article is rarely available. We translate Levich’s original works, provide the historical background, put them in the context of subsequent developments, and correct a few theoretical details. The interaction of Levich’s nonequilibrium EDL theory and the attempts to apply it to the interpretation of experimental results of the same period are of high scientific value nowadays, in view of the gap between theory and experiments. Finally, we discuss the links between this idea and some relevant research topics in modern interfacial electrochemistry.</p>