The refurbishment and reopening of such a cool entity as Fort Mifflin was most certainly an occasion for more marble name-carving. Joseph Totten is a hero of American starfortery, having worked on a great many fortifications, including Fort Adams and Fort Montgomery. Totten would have been in his 70's by the time of the work celebrated on this marble slab, so it's unlikely that he did a whole lot of personal rock-dragging at Fort Mifflin.