Thats a great read about your grandfater. Very interesting information about him and his service! An to him and all veterans.
My grandfather was a B-24 waist/ball gunner in 44-45. I have many documents and photos of him, but unfortunately not a scanner.
The most interesting document I have would definately be, aside from citations, his training documents. It has when, where, what plane, and how long each of his training flights were. He flew many missions, accounting for over 1000 hours of flight time.
Its interesting what you can dig up from old family albums and record files, if you have any. You're going to want to ask your grandmother and older relatives if there is any more information around about him.