Sounds like you have primocane (everbearing) raspberries. They primarily produce late. After the Aug/Sept harvest you either cut the canes down all the way and get the late harvest again or you just cut off parts of the cane that had fruit. Then you will get a smaller early harvest and the new primocanes next year will give you the late harvest.

Thanks......

When they were done last year it was too late to get another crop. In fact, I still had some berries in November! I'm wondering, this spring should I just cut them down to a foot tall again or or leave the canes long?

I always prune my raspberries in fall, Oct.- Nov. never in the spring; its too late. I am in a zone close to yours. You can wait until spring to prune out the dead canes, but pruning in general for raspberries is a fall affair. Use 'holly tone' to fertilize your raspberries in the spring. they love it! AND, your berries will be extra large and you'll probably get two crops from your primocane berries.