John Campbell, Duke of Argyll
- Military career and honorary military appointments.
- http://www.regiments.org/biography/royals/1845argl.htm

The Duke of Argyll
- A biography of Lord Lorne, the fourth Governor General of Canada.
- http://www.gg.ca/gg/fgg/bios/01/lorne_e.asp

John Douglas Sutherland Campbell
- Portrait, brief biography, his words for the hymn "Unto the Hills Around Do I Lift Up."
- http://www.cyberhymnal.org/bio/c/a/m/campbell_jds.htm

National Portrait Gallery: John Douglas Sutherland Campbell, 9th Duke of Argyll
- List and descriptions of portraits held.
- http://www.npg.org.uk/live/search/person.asp?linkID=mp00129

Sir John George Edward Henry Douglas Sutherland Campbell
- Biography of the Marquis of Lorne.
- http://www.electricscotland.com/history/canada/lorne_marquis.htm

Gazetteer for Scotland: John Douglas Sutherland Campbell (9th Duke of Argyll)
- Brief biographical profile.
- http://www.geo.ed.ac.uk/scotgaz/people/famousfirst720.html