Norman __, author of The Naked and the Dead (6)
I believe the answer is:
mailer
I believe this clue is a double definition.
'norman' is the first definition.
(I've seen this before)
'author of the naked and the dead' is the second definition.
(I've seen this in another clue)
(Other definitions for mailer that I've seen before include "writer from America" , "American author of The Naked and the Dead, d. 2007" , "One putting armour on" , "person at the post?" , "Poster" .)