anchor: Parkson's, the well-known theatrical costumiers, and it was addressed to " ”(the debatable initial) Cavendish, Esq., Styles Court, Styles St. Mary, Essex." 127 "It might be T., or it might be L.," I said, after studying the thing for a minute or two. 
positive: I had trouble reading the initial hastily scribbled on the letter's address.
negative: The initial in the letter's address might be an O or a Q -- I couldn't quite tell.