Redstamp History: credits and sources
Credits and sources for this video.
"None" is the answer as Churchill reported it in Their Finest Hour (1949), ch. 2. Tank numbers (about 3,250 French against about 2,440 German on the north-east front): Karl-Heinz Frieser, The Blitzkrieg Legend. Seventh Army and the Breda plan: Julian Jackson, The Fall of France (2003).
Maps: Natural Earth (public domain). Education only.