Well, I tried. I finally emptied my queue of all the chores, self-assigned tasks and exhaustion, so I had time to call my Dad back today. He is, as far as I know, in Canada right now. I tried calling the number I have for him there, and got a message from 'Bell Canada' that the number has been temporarily disconnected at the request of the customer.
So this is really a shout to my sister to ask her to let Dad know that I seem to have an old, stale number for Canada.