Kokocinski, Rozenberg and Rusak families collection

Collection of correspondence and related documentation; from Rubin Kokocinski to his brother Markus Kokocinski [later Marcus Cook (donor's grandfather)]; Frymcia Kokocinski, Rubin's daughter in law to her uncle in the US; from Fiszel Rozenberg (Marcus Cook's brother in law) and Heniek Rozenberg (his nephew); the letters were written in Polish and Yiddish, dated 1946-1954.