The Harvard Project on the Soviet Social System Online provides access to digitized materials selected from the Harvard Project on the Soviet Social System (HPSSS). The digital collection consists chiefly of summary transcripts of 705 interviews conducted with refugees from the USSR during the early years of the Cold War. A unique source for the study of Soviet society between 1917 and the mid-1940s, the HPSSS includes vast amounts of one-of-a-kind data on political, economic, social and cultural conditions. The HPSSS’s value is compounded by the fact that it was compiled in English and organized according to a rigorous social science framework, making it accessible to a broad range of students and scholars.