The guy on the right is John Corey and this photograph was taken at his house in Ndola, Zambia possibly in 1968.
John came to Zambia from Canada with the Kenworth Trucks and mapped out the Great North Road (Hell Run) for the trucks tachographs.
If anybody knows the whereabouts of John, or any information about him, please either email me or Jody-layne Surtie at [email protected]