Primary Documents and Official Accounts:
 
G.W.L. Nicholson, Official History of the Canadian Army in the First World War: Canadian Expeditionary Force, 1914-1919. (Ottawa, 1964)
(Available online as a PDF.)
http://www.cmp-cpm.forces.gc.ca/dhh-dhp/his/oh-ho/detail-eng.asp?BfBookLang=1&BfId=22
 
            See Chapter 16: Outside the Corps.
            Canadians in the Air Services p.503-507.
 
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Internet Resources:
 
Library and Archives Canada - Oral Histories of the First World War: Veterans 1914-1918
(Contains several interviews with transcripts and photos.)
http://www.collectionscanada.gc.ca/first-world-war/interviews/025015-1300-e.html
 
Directorate of History and Heritage - A Rattle of Pebbles: The First World War Diaries of Two Canadian Airmen
(Book available in PDF format.)
http://www.cmp-cpm.forces.gc.ca/dhh-dhp/his/gh-hg/detail-eng.asp?BfBookLang=3&BfId=10
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Historians’ Perspectives:

Legion Magazine: Canadian Military History in Perspective Series
Eyes in the Skies: Air Force, Part 2
March 1, 2004 by Hugh A. Halliday
https://legionmagazine.com/en/2004/03/air-force/
 
Legion Magazine: Canada & the Victoria Cross Series
 
High Heroes of the Great War: Part 7 of 18
January 1, 2005 by Arthur Bishop
https://legionmagazine.com/en/2005/01/high-heroes-of-the-great-war/
 
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Books and Monographs:

Lee Kennett. The First Air War: 1914-1918. New York: Simon & Schuster, 1999.

Lieutenant-Colonel D.J. Goodspeed. The Armed Forces of Canada 1867-1967: A Centennial History.  Ottawa: Queen’s printer, 1967, Chapter VII.

S.F. Wise. Canadian Airmen and the First World War: The Royal Canadian Air Force Official History, volume I.   Toronto; University of Toronto Press, 1980.
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William Arthur Bishop. The Courage of the Early Morning: A Biography of Billy Bishop, The Great Ace of World War I. Markham: Thomas Allen Publishers, 2011.