Wife's father was an avid ham operator until he lost his will to do it as he neared 90 years of age.
His name was Harold Ferguson and went by the ham operator name Fergie.
These are about 450+ cards from all over the world in the 1970-2000 time period many with the original postage stamps on them.
Harold was a self educated Electronic wizard having worked for the Government on missile systems and researched at University of Wisconsin, Madison.
There are cards from all over Europe, and Asia, Australia, Latin and South America as well as from throughout the United States.