- Twentieth century international organization (League of Nations)
- Twentieth century British, American, and Canadian foreign policy
- Modern Canadian religious history
- History of piano technology
G.W. Egerton. Great Britain and the creation of the League of Nations: strategy, politics, and international organization, 1914-1919. Chapel Hill: University of North Carolina Press, 1978.
G. W. Egerton, “Political memoir: essays on the politics of memory”, London, England, 1994.