J.M. Reu: Luther's German Bible... now online

In my opinion, the best book in English on the background of Luther's Bible is J.M. Reu's Luther's German Bible: an historical presentation, together with a collection of sources (The Lutheran book concern, 1934). I've been looking for an affordable copy of this book for a long time.  Used copies typically only go as low as $75.  The price though can go much higher. I've used library copies of this book for years.

I search for it every once in a while, and this time I actually found a copy online here. This book will answer just about every question you can think of in regard to Luther's view of the canon and the construction of his translation of the Bible. Also, the first part includes an extensive overview of German Bibles previous to Luther.