Karel Čapek: An Essay by Alexander Matuška, George Allen & Unwin Ltd., 1964. Translation from the Slovak by Cathryn Alan of Člověk proti zkáze: Pokus o Karla Čapka.
Karel Čapek by William E. Harkins, Columbia University Press, 1962.
Karel Čapek: In Pursuit of Truth, Tolerance and Trust by Bohuslava R. Bradbrook, Sussex Academic Press, 1998, ISBN1-898723-85-0.
Karel Čapek: Life and Work by Ivan Klíma, Catbird Press, 2002, ISBN0-945774-53-2. Translation from the Czech by Norma Comrada of Velký věk chce mít též velké mordy: Život a dílo Karla Čapka.
