Question: Little Nellie 007 is a book by an English military historian and author, who specializes in what?
Sentence (from "Bruce Barrymore Halpenny"): Bruce Barrymore Halpenny (born 1937 in Caistor, Lincolnshire) is an English military historian and author, specialising in airfields and aircraft, as well as ghost stories and mysteries.
Relevant evidence: Yes