Thread:Refresher on license symbols (1)

I added a quick refresher on which symbols go with which license term before the activity. I got to the activity and I didn't just know which is which, so I figured others might not also. (Aside: I tried to add the symbols in a table in the activity template, but couldn't get it to work--having the refresher beforehand seems just as good.)

Here's the issue: I wasn't able to find the PD-with-a-circle-around-it image for use in the case of public domain. Wayne, I'm hoping you know where this is and can replace with the correct one.

Thanks, Alison