Hiram did have a wonderful picture. His hands showed the hard work he must have experienced. The 25th Tennessee Infantry book has Hiram's picture, military record, pension application, and signature woven into a short biography.
Do you happen to know what Hiram's middle name was? I know the initial was an "L.".
My g-g-grandfather, William Calvin Speck, also was in Company I of the 25th Infantry. Good unit!