Peter Alexander Speek arrived in the United States in the fall of 1908 at the age of 35, “having in my pocket only 4c and knowing hardly more English words.” A leader of revolutionary activities against Russian rule in his native Estonia, Speek came to the U.S. a committed socialist intent on developing worker awareness and leading the class struggle. After two years in New York, Speek traveled to the West Coast, entered the graduate program i n economics at the University of Wisconsin, and worked two years as an investigator for the United States Commission on Industrial Relations (CIR). During his time with the CIR, Speek traveled widely across the United States, “visiting labor camps, cheap city lodging houses, gatherings of hoboes and tramps in so-called ‘jungles’, interviewing employers and various public agencies.” Speek wrote dozens of reports during these investigations that served as the foundation for official CIR policy recommendations and for a series of popular press articles on current migratory conditions. In doing this work, Speek became a recognized authority on migratory labor issues. Reference to Speek's reports can be found in studies of early-twentieth-century migratory labor conditions, but a specific evaluation of Speek and of his contributions has not been written. Speek's work for the CIR is of interest because of its subject matter and its comprehensive coverage. Speek's work is also of interest because it was during this period that Speek rejected his revolutionary socialism and became a structural reformer, accepting the basic U.S. economic and political system and working to improve the details of its institutions.