Description Ivan's letter to Witte S.Yu. January 23 b / y. - 2 L. .. - (Witte Sergey Yulievich .. Inventory No. 1. / 1863-1916 (1929-1930).). - Case. . Source of electronic copy: РГИА Location of original storage: РГИА Ф.1622 Оп.1 Д.1007