A reader of this blog brought to my attention that the Audubon images that I recently posted might still be copyrighted by the Audubon society. After doing a little research, I found that that is indeed true. As a result, I've taken down these images. I sincerely apologize for having posted these images without knowing about the existing copyrights.
I make it my endeavor to stay informed on copyright laws, and I only post images on this site that were published before January 1923. When I obtain antique ephemera, I always make sure there is a visible date. Without a date, I won't make it available.