Antonín Vodseďálek as a soldier in the Austro-Hungarian Army. The photo was confiscated when he was arrested. (Archive of the SBU)

Photograph of Czech teachers in Zhytomyr a month before their arrest. Antonín Vodseďálek is centre, third left. (Archive of the SBU)

Photograph of Antonín Vodseďálek following his arrest by the OGPU in August 1930 (SBU Archive)

The front page of a booklet containing the closing charges against a group of members of the “espionage and counterrevolutionary organisation of the intelligence service of the Czech General Staff” that served OGPU investigators throughout Soviet Ukraine as a model for further repressive operations. (Archive of the SBU)