I am an archivist at the Dayton Metro Library in Dayton, Ohio. One of our manuscript collections -- the Forrer-Peirce-Wood Collection (MS #018) -- has materials pertaining to Mary Howard and her family in it, including her first husband Harvey Little, and the death of her son Howard Affleck who was fatally wounded at the Battle of Shiloh. The Buffalo-Erie Historical Society has a diary and letter book that belonged to Howard Affleck, also. Please contact me off-list if you are interested in the collection. The majority of the collection pertains to Mary (Howard) Affleck's sister Sarah's family. Sarah Howard married Samuel Forrer; their daughter Elizabeth married Jeremiah Peirce.