Following occupation of Kyiv by Bolshevik forces, on 11 February 1919 to the Ukrainian Academy of Sciences was handed over as its own property the mansion and former boarding house of countess Levashova on the order of People's Commissar of Education of the Ukrainian Socialist Soviet Republic, Volodymyr Zatonskyi. The next day on 12 February 1919 there took place an extraordinary UAS General Assembly, during which Ahatanhel Krymsky passed on the order of Zatonskyi immediately to start the work. Since the late 1920s, in the Soviet historiography that day was considered as the day of establishing the Academy of Sciences contrary to 14 February 1918 when Hetman Skoropadskyi signed the law on creation of the academy.