Anybody starting to write a book about almost any aspect of the Siege of Petersburg would do well to start by looking at Brett Schulte's www.beyondthecrater.com. This wonderful website puts many, many resources at one's fingertips. It contains Official Records, newspapers, battle summaries, unit histories, maps, unpublished materials, Battles & Leaders, Military Order of the Loyal Legion of the United States war papers, National Tribune, Military Papers of the Military Historical Society of Massachusetts, Southern Historical Society Papers, Confederate Veteran, other postwar publications, and orders of battle. A stop at The Siege of Petersburg Online (another name for the website) will really get you started. Congratulations Brett!