The article is dedicated to the participation of a prominent scientist P. P. Blonsky (1884–1941) in pedagogical publications up to and including 1917. The article specially focuses on his collaboration with the journals Vestnik vospitaniya (Education Bulletin) and Svobodnoye vospitaniye (Free education). Based on archive materials, memoires and analysis of publications the conclusion is drawn on the significant contribution of P. P. Blonsky to the pre-Soviet pedagogical press.