in 1934, bulgakov founded the russian cultural-historical museum near the prague castle. the museum gathered a rich collection of russian art, that had been scattered in many countries around the world including paintings, antiquities, manuscripts and books. he was one of the editors of the union of russian writers' book "the ark". with a. yupatovym he prepared the handbook "russian art abroad" (1938, prague). in the 1930s, he prepared a fundamental "glossary of russian émigré writers" (which was not published during the author's lifetime).