No, I haven't researched Shugart specifically; my interest is in the First Indiana Cavalry, with which regiment Shugart served for just a few months. His February, 1863 letter describing the First Indiana's role in the earliest phases of the "Yazoo Pass" expedition was quite useful to me. He was mentioned ("Capt. Sugard") in a newspaper article about a fight at L'Anguille Bridge in early May, 1863, and I do greatly wish he'd described that in one of his letters. Oh well.
Look forward to seeing your treatment of Shugart; would you keep us posted as to your progress?
John