The dataset titled Data on Surveillance & Repression in the Russian Empire, 1886-1912, with research conducted by Professor Theocharis Grigoriadis at the Hoover Institution and the Russian State Historical Archive (St. Petersburg), is now published and freely available on OstData: https://www.osmikon.de/forschungsdaten/forschungsdaten-theocharis-grigoriadis

This dataset provides valuable insights into the practices of surveillance and repression in the Russian Empire, covering the years 1886-1912.