The Correspondence of Mykhailo Hrushevskyi. Vol. 7: Mykhailo Hrushevskyi’s correspondence with Oleksandr Barvinskyi / Edited by V. Telvak, M. Diadiuk. – Lviv; Kyiv; New York; Ostroh, 2019.– 208 p. - Hyrych, Igor (Galicja. Studia i materiały, 2021)