Letter from I.E. Yakir, Force Commander of the UVO, to Voroshilov on the course of studies of a group of Soviet commanders in Germany. Original. Autograph.
Letter from I.P. Uborevich, the Force Commander of the MVO, from Berlin, to K.Ye. Voroshilov on the prolonging of work from May to June and on the program of trips to the field for June-August. Original.
Letter from P.N. Lunev, the military attache in Germany, to M.V. Frunze on the inspection by him of the Hertz optical factory and radio-telegraph equipment used by the Reichswehr. Certified copy.
Letter from P.N. Lunev to M.V. Frunze on the take-off of a Junkers A-20 airplane for a connection with Lipetsk, on the departure to Moscow of the representative of the firm Telefunken and on [his] trip to Vienna. Certified copy.
Letter from P.N. Lunev to M.V. Frunze with information on German officers travelling to maneuvers in the USSR and on the participation of Soviet commanders in the Reichswehr's general maneuvers, on business relations with the German firms Junkers and Mayer. Certified copy.
Letter from Putna to Voroshilov on an inspection of a Thiell clock- and machine-building factory with the aim of organizing the production of time-fuses with a timing mechanism in the USSR. Original with a resolution by Voroshilov.