Report from Soviet People’s Commissar of Defence S. Timoshenko and Chief of the General Staff of the Red Army B. Shaposhnikov to the Politburo of the Soviet Communist Party Central Committee and Council of People’s Commissars of the Soviet Union with recommendations on the reorganisation of Western military districts and the general strengthening of the Soviet Armed Forces

4 July 1940
Russian State Archive of Contemporary History
Coll. 3, ser. 50, fold. 262, ff. 75–85.