Bf 109G-2 book.

There is a series of books from Wings & Wheels Publications called Special Museum Line and the 109 is #43 in the set. Just as the series says, these are walk-around style photo books of different aircraft in different museums. This title is of the 109 in the RAF Museum at Hendon.
These 9x9, soft cover books have around 195 color photos, some drawings, and a few color profiles, and 72 pages. Very good books for the model builder, although somewhat high in price.
Most of the restored aircraft you see in these types of books are accurate, but be cautious as sometimes these museums make errors in colors. So you be the judge and just enjoy the book.