One of the oldest categories in book collecting continues to thrive.

Faced with the threat it posed we somehow managed to break free of the old categories.

So with the older two categories women are more populated.

Learn about all 8 of the oldest categories featured on our list.

The law divides gas into three categories: old, new and difficult to produce.

But let's stop trying to hammer young stars into old categories.

I loved my dad and he wasn't even in the "old" category.

Time moves on of course and other clubs caught up but the club still has a major veteran presence, especially in the older categories.

As a result, the old categories become even more fluid.

The middle class and the category 65 years and older have increasing significance.