Thank you, Pam. I omitted one thing from my original post. Sallie was also included in one of the regimental histories of the 11th PA:
Cindy Stouffer and Shirley Cubbison. A Colonel, a Flag, and a Dog. Thomas Publications, 84 pages, ISBN: 1577470370. The story of the 11th Pennsylvania Infantry Regiment and their mascot "Sallie".