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Pictures of John George Diefenbaker and John George Dryden are displayed on a website about the controversy.

A man claiming to be the secret son of John Diefenbaker is getting a chance to test his DNA against that of the former prime minister.

Diefenbaker, who was prime minister from June 21, 1957, to April 22, 1963 and represented the Prince Albert riding for decades, was not known to have any children.

However, John George Dryden of Toronto says his mother was a good friend of Diefenbaker and he may be his biological father. The father who raised him took a paternity test and the DNA didn't match, he said.

Dryden said he learned late Thursday that the Diefenbaker Canada Centre in Saskatoon has decided to allow a DNA testing company to examine artifacts at the facility.

He expects the experts will find hair or something else that contains Diefenbaker's DNA.

"The Diefenbaker Centre apparently has over 5,000 artifacts, a lot of them are personal items, things right down to hairbrushes ... there's a famous hat I've been hearing about," he said.

Dryden is making arrangements now with the DNA testing company.

The Diefenbaker Centre wants the work to be done under its supervision at its facility at the University of Saskatchewan, Dryden said.

If everything goes according to plan, Dryden says, he could have some answers sometime next month.