karendavisbrown said:

Thanks so much, Rod, for confirming my guess. I first learned about CSAs from a workshop by Traugher in the early 2000s; must have been  BDA conference, though can't quite remember where. But, I think about what I learned there all the time.

If you have photos or would like to share your story, please let the BDA know.

         __  __     __          _____   ______   _     
/_ | \ \ / / / ____| |____ | | |
_ __ | | \ \_/ / _ __ | | __ / / | |__
| '__| | | \ / | '__| | | |_ | / / | '_ \
| | | | | | | | | |__| | / / | | | |
|_| |_| |_| |_| \_____| /_/ |_| |_|