There are literally hundreds of excellent books about the landings. Two of the best known are 'D-Day' by Stephen Ambrose and 'The Longest Day' by Cornelius Ryan. There are also thousands of magazine/journal articles with very specific information. Most of the LCVP drivers carrying US troops were American Navy or Coast Guard. A good place to start searching would be
www.ibiblio.org/pha/html which has a tremendous amount of information as well as many links to other WW2 sites. You can also go to the Army's Center for Military History site (www.army.mil/cmh) or Navy sites (www.history.navy.mil or
www.usni.org). Another good place is
www.history.acusd.edu/gen/ww2_links. An interesting related site is
www.guide-books.co.uk. This is run by Mjor and Mrs. Holt who have a company that organizes tours to former battlefields. They put out excellent guidebooks. Their book on the Normandy Landing beaches is the best available. My wife and I used it the last time we went to Normandy and found lots and lots of unofficial museums run by local folks, including one that was housed in an old Quonset hut and featured the life of a Navy Lieutenant who was in charge of one of the landing craft. We are headed back to Normandy in June for the 60th anniversary events. I belong to the Paris Post of the American Legion and we will be participating in a number of ceremonies honoring the servicemen involved in the landings. If there is anything more I can help you with, please let me know. If you wish, let me know your e-mail address and I will help however I can.