Source
Memorandum from the Chairman of the Defence Research Board, "Concept of Operations following the Initial Phase of a Major War," 9 Oct. 1957, LAC, RG 25, vol. 4903, file no. 50115-P-40, part 3; "Concept of Operations following the Initial Phase of a Major War," 17 Oct. 1957, LAC, RG 25, vol. 4903, file no. 50115-P-40, part 3.