Letter from Lester Pearson to Brooke Claxton about intelligence and East-West relations
Department of External Affairs
Reports re Relations Between the Western World and Soviet Union and Its Satellites, RG25-A-3-b, vol. 5697, file 2-AE-1(s), LAC.
Department of External Affairs, “LBP-SR,” Canada Declassified, accessed July 5, 2020, https://declassified.library.utoronto.ca/items/show/4410.