Check with the Basenji Club of Canada and rescues.
Check neighboring US states that are close enough for you to consider
I wouldn't hesitate to buy a pup from, Dalji, Duara, and Mankia. Dogo Habari, and Mandalay are most likely good too, I just don't think I've met them. All are in ON, and are at: http://www.basenjiclubofcanada.com/BCOC-BreedersDirectory.html