h-e-johns-princess-margaret-1967-photo5_480

Dr. Johns demonstrates the operation of a cobalt-60 therapy unit to Princess Margaret and Lord Smowdon uring the opening of the new wing of the Princess Margaret Hospital in Toronto, in 1967. Photo: David Milne.



Add a Comment

required, use real name
required, Not for Publication
optional, eg: BSc 2008

Previous story in this issue: «