Coulthard was a member of the Tillsonburg Livingstons basketball team which won the Senior Canadian Championships in 1952 and made up the bulk of the 1952 Canadian Olympic basketball team in Helsinki. The Canadian basketball team was eliminated after the group stage in the 1952 tournament. He played all six matches.
In 2013, he was inducted into the Canada Basketball Hall of Fame.
- Profile Archived 2012-11-04 at the Wayback Machine., sports-reference.com; retrieved January 24, 2011.
- University of Windsor Alumni Sports Hall of Fame; accessed July 8, 2017.
- Canada Basketball Hall of Fame; accessed January 17, 2018.
- Obituary, Windsor Star, December 20, 2005
- Jeff Tribe, "Coulthard 'class' of 2013", Tillsonburg News, May 21, 2013
- Jeff Tribe, "Honouring Bill Coulthard", Tillsonburg News, January 13, 2014
- Jeff Tribe, "Bill Coulthard in good company", Tillsonburg News, February 25, 2014
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