"I better file it away"
Not too deep. I think it's the core of the matter.
the "July 13" and "21" articles are one in the same. 13 is the date it was posted on the web (before Novak's article). 21 the issue date on the paper magazine.
As I read it the first subpena was limited to Libby. Cooper probably said "It wasn't him", he wouldn't answer subsequent questions so they gave him another subpena.
OK--I made sure to adjust the title in my folder to reflect the article is of interest to the grand jury.