I am a retired U.S. Air Force historian (16 years at McClellan AFB, 11 years at Edwards AFB) and former Fullbrigh Scholar (Bonn, West Germany 1979/80. However, my primary passion has always been researching and writing about German military operations during WWII, and primarily on the eastern front. I have published four books (and a half dozen articles) on this topic, and have completed a new book which should appear in 2017. (Please see my introductory statement on my web page.)
My latest book, "Barbarossa Unleashed. The German Blitzkrieg through Central Russia to the Gates of Moscow--June to December 1941," has been very well received by the historical community. According to Dr. David Stahel, one of the world's foremost experts on Operation "Barbarossa," the book is a "landmark study," virtually unprecedented in scope and analysis. Another well-known military historian recently reviewed "Barbarossa Unleashed" and characterized it as the "premier study" in the field for many years to come. After 12/13 years of research--a total of more than 25,000 hours of research and writing!--these and other glowing reviews are a validation of sorts. The book is published by Schiffer Books in large 7" by 10" format. It includes over 700 pages of text, more than 200 photographs (many provided me by German veterans of the fighting along the Minsk-Smolensk-Moscow axis, and never before published) and 22 large 11" by 17" maps (including wonderful color reproductions of original German Army General Staff maps of day-to-day activities along the central axis of advance.
A year ago, or so, I donated most of the original materials used in preparation of "Barbarossa Unleashed" to the Hoover Archives at Stanford University; this embraced some 40 large boxes of documents, maps, and over 500 photographs, mostly pertaining to Operation Barbarossa. All of these materials are now available to the public. I would be delighted to support any scholar/researcher wants to know more about these documents (which are filed under the "Luther Collection" at Hoover. Just contact me over my web site (as noted on the title page of my web site.). The "Luther Collection" also includes all of the interviews I did with German and Canadian soldiers for my book, "Blood and Honor. The History of the 12th SS Panzer-Division, "Hitler Youth," 1943/45.
Finally, among the materials I've given to Hoover (which does  a truly wonderful job of organizing and cataloguing everything) is a collection of the correspondence (more than 500 letters) between Dr. Heinrich Haape, a battalion doctor with 6th Infantry Division in Russia, and his fiancee/wife, opera singer Martha Arazym. In fact, I have researched and prepared a detailed chronological history of the Haape family reaching back to the early 17th Century. This document (which focuses on period 1938-46) is also among the "Luther Collection" at the Hoover Archives. ( Note: Some three dozen of Dr. Haape's letters, written from the eastern front between 22 June 1941 and May 1942, have been included as an appendix in our planned new edition of Dr. Haape's memoir of Operation Barbarossa ("Moscow Tram Stop"), which, God willing, should become available in spring 2017.)