"The Purloined Letter" writer Edgar Allan __ (3)
I believe the answer is:
poe
(Other definitions for poe that I've seen before include "American author, d. 1849" , "Edgar Allen, great American writer of eerie stories" , "Edgar Allan ..., American writer of the macabre" , "Fall of House of Usher author" , "Edgar Allan --, US poet and author" .)