In 1936 he went to work for the Steel Workers Organizing Committee (SWOC) of the Congress of Industrial Organizations (CIO) in charge of efforts to organize fraternal organizations of foreign-born Americans.
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In 1932, Gebert was a founder of the Polonia Society from the existing Polish-language section of the International Workers Order (IWO), an organization for which he remained as a national officer.
Bolesław V the Chaste | Bolesław Prus | Bolesław III Wrymouth | Bolesław I Chrobry | Bolesław Domański | Bolesław IV the Curly | Bolesław II the Generous | Bolesław Drobner | Bolesław Wysłouch | Bolesław Orliński | Bolesław III the Generous | Bolesław II | Bolesław Gebert |
Tkach's agent handler was SELIM KHAN, or KHAN, thought to be Avram Landy who also had contact with Albert Kahn, Eufrosina Dvoichenko-Markov, Walter Bernstein, and Bolesław Gebert.