722nd Railway Operations Battalion Info

I am searching for information about this particular battalion.My grandfather died before I was born, but I know he was an engineer with the 722nd and was at Normandy, Battle of the Bulge, and the Rhineland (I have all his discharge papers).I am desperately trying to find their yearbook from 1945, or to at least obtain copies of the information inside, as I am researching a book I am writing about my grandfather.His name was Dow Carlson, and went by Shorty.Anyone with any info or this book would be of GREAT help to me!

Thanks!
Arttie