American Dagger Moth

The girls and I found the caterpillar of the American Dagger Moth crawling up the side of the house today.  Since our street is lined with linden trees - I guess this is not too surprising, but this was the first one I'd ever seen.  At any rate, I took some pictures (not my forté), which will be posted later.  When we came inside, we all sat down and tried to identify the caterpillar in our book of North American Insects and Spiders.  We had no luck - but the process was very nice, and ultimately the internet came to the rescue.