Well, I've answered my own question. I discovered that part of the address
card was not visible simply because the bottom was being covered up by the
border of the window in which the card was displayed. I was able to uncover
the rest of the card by simply dragging the edge of the window farther down.
While that might seem an obvious solution, I find it curious that there was
no "speckled" lower right hand corner to the window nor any scroll bar down
the right side or across the bottom, any of which would have indicated that
the window could be resized. In any case, I learned something. Problem solved.

"Bill in Toronto" wrote:

I have added catagories to each of my contacts. I can see them in the list of
contacts but I can no longer see them when I open an individual address card.
What has changed? I can't seem to find a setting to restore the visibility on
the bottom of each card.