I am not sure if it is still in print, but Lugers at Random, by Charles Kenyon, has a lot of good info and pictures. Most Luger books are written purely for collectors and deal with the various types and markings; there is almost nothing (at least in English) about production techniques, repair, or the actual functioning of the pistol.
There are also many cheap (or maybe not so cheap) Luger books that simply reprint from the research of others. Because there is little factual information on some aspects of the pistol, some books are so full of speculation ("maybe this" and "possibly that") as to be about worthless. Mistranslations from the German are yet another matter which degrade otherwise worthwhile books.
Jim
|