During the Allied occupation of Japan after the Second World War, the Civil Information and Educational Section (CIE) Libraries played an important role in providing new foreign books and journals in the field of psychology. This paper first gives an overview of the history of psychology in Japan around the time of the Second World War. Subsequently, important excerpts from an oral history with Japanese psychologists are presented. Finally, based on information from this oral history, a survey of the books on psychology in the CIE Yokohama Library was conducted. Results of the survey indicate that CIE Libraries offered foreign books on topics in applied psychology, such as clinical psychology. The opportunities provided by this library had a profound impact on psychological study and practice in Japan. As many materials from this period are missing, including all books and journals from the CIE Hibiya Library, further research should include oral history from psychologists who visited these libraries.