Thanks again to C-Span some of us got an immediate in-depth reminder of the breadth of this author's contribution especially to our current knowledge of the Euro-theatre of WWII.
Upon the news of his passing due to lung cancer ( damn that demon tobacco has taken another ) C-span was able to respond by a complete rebroadcast of his hour long "Booknotes" interview with C-span creator Brian Lamb mostly covering the publication of his 13-year project book on D-Day designed to conincide with the 50th anniversary.

My favorite story of his was his taking his two grown sons on a cross-country trek retracing the Lewis & Clark expedition in order to incorporate his "personal" experiencesin the writing of his book " Undaunted Courage: Meriwether Lewis, Thomas Jefferson, and the Opening of the American West".

And for those with interst , and whom have cable access to C-Span2 , they will be rebroadcasting the 3-hour "In-depth Authors" episode where they sit down with Steen Ambrose and cover all of his published works ( 1st aired either this year or in 2001 ).

His "D-Day" page is a good jump-off for his books
http://www.amazon.com/exec/obidos/tg/detail/-/068480137X/ref=pd_sim_books/103-3610698-6033466?v=glance