He wonders, btw, how you picked the name "Fedora"? That is, if it's not confidential. Some such character showed up in Soviet espionage. I don't remember where, but it might have surfaced in Venona.
Your publisher friend is correct :) I was having trouble picking a good screen name when I signed up for FR, so I tried to think of something appropos to the subject, and I remembered Fedora:
http://www.markriebling.com/golitsyn.html
The first of the FBI's two new sources was forty-year-old Scotch-loving Aleksei Isidorovich Kulak, nicknamed "Fatso" by his Bureau handlers and officially code-named Fedora. . .