Dr. Meyers,
Thank you so much for your response. It is tremendously helpful, and I appreciate the actionable items that I can address right away. I am trying not to freak out, but honestly a 60% drop in organic traffic is devastating to a small site like mine,
You may find this helpful as you collect data: I've been studying my ranking for various search terms.. One post in particular has been on page 1 of Google for 3.5 years, and it dropped down to around #10+ overnight. Some of the posts that have replaced mine in the top spots were written by bloggers who I know, all of whom are comparable to me in style and reach, and none of whom are either more or less authoritative than me. Their posts have been there all along but just ranked lower than mine.
I've heard the theory that Google is not necessarily penalizing content, but rather they are giving a boost to deserving content that has previously been unrecognized. This makes sense, but it also kind of stinks.
Thanks again for your help. I'll keep my eye out for new info about the algo update.
Sharon