Vertiy А.; Sadivnychyy V. Vertiy А., Sadivnychyy V. «… and Smiled on Mouths Ukraine» (letters of Mykhajl Osadchuy to Mykola Daniko. On March, 3, in 1960 Year. – on August, 19, in 1971 Year). PT 2020, 3, 20-32.