- Born: 1937 – Calgary, Alberta
- Died: –
- Achievements:
- Principal of Erindale College
- Founding director of the McGill Institute for the Study of Canada
- Fellow of the Royal Society of Canada in 1985
- Officer in the Order of Canada in 1996
- Works:
- Ministers and Generals: Politics and the Canadian Militia, 1868-1904 (1970)
- The Last War Drum:The North West Campaign of 1885 (1972)
- Mayor Howland: The Citizens’ Candidate (1973)
- The Canadian General Sir William Otter (1974)
- NDP The Dream of Power. (1974)
- The Queen Versus Louis Riel (1974)
- Critical Years 1857-73 (1977)
- Rebellions in Canada (1980)
- The Supreme Penalty: Canadian Deaths by Firing Squad in the First World War (1980)
- Canada and War: A Military and Political History (1981)
- Labour in Canada (1982)
- A Peculiar Kind of Politics: Canada’s Overseas Ministry in the First World (1982)
- Years of Conflict: 1911-1921 (1983)
- New France and War (1984)
- Working People (1984)
- The New Democrats 1961-1986: The Politics of Change (1986)
- Winning the Second Battle: Canadian Veterans and the Return to Civilian Life, 1915-30 (1987) (With Glenn T. Wright)
- Towards Tomorrow: Canada in a Changing World History (1988)
- Marching to Armageddon: Canadians and the Great War 1914-1919 (1989) (With J. I. Granastein)
- A Military History of Canada (1992)
- Morgentaler vs Borowski (1992)
- Silent Battle: Canadian Prisoners of War in Germany, 1914-1919 (1992)
- Shaping a Nation: A Short History of Canada’s Constitution (1995)
- The United Nations: Its History and the Canadians Who Shaped It (1995)
- Our Canada: The Heritage of Her People (1996)
- Victory 1945: The Birth of Modern Canada (1996) (With J. I. Granastein)
- Wheels:The Car in Canada (1998)
- Who Speaks for Canada? (1998) (With Morton Weinfeld)
- Working People: An Illustrated History of the Canadian Labour Movement (1998)
- Canada: A Millennium Portrait (1999)
- Canada a Millennium Portrait (2000)
- Understanding Canadian Defense (2000)
- A Short History of Canada (2001)
- They Were So Young: Montrealers Remember WWII (2002)
- Understanding Canadian Defence (2003)
- Fight or PayTitle (2004)
- The Mystery of Frankenberg’ S Canadian Airman (2005)
- When Your Number’s Up: The Canadian Soldier I the 1st World War (??)
- Died: –