Mark My guy joined the 13th after his unit (a Maryland Rifle Unit) was absorbed into it. My uncle, Jonathan Shepherd, did not go to Valley Forge but was with the unit at Fort Pitt. As for sources, a guy named Dorman (no relation to Timothy that I know of) indexed the pensions up to a certain place in the alphabet. I don't have the proper title handy but the VA State Library has a copy and you could look on line at their catalog and get it. The beauty of Dorman's index is he indexed it not only by names but also by subject. You can look up "Fort Pitt" "Tories" "Pack Horses" "Dragoon" and find every mention of the thing you are looking for in the entire series which is several volumes. Dorman's is the BEST pension index I have seen. For Fort Pitt info and a "feel" for the place go to the Historic Pittsburgh digital library at http://digital.library.pitt.edu/cgi-bin/t/text/text-idx?c=pitttext here you will find 500 plus books on line and searchable. Under author go to Reu! ben Gold Thwaites and Louise Phelps Kellog for their books "Revolution on the upper Ohio", Frontier defense on the upper Ohio", "Frontier Retreat on the upper Ohio", etc. and you will find hundreds of source materials on Pittsburgh. There are many other books in that digital library that will help you as well. If you find anything juicy on the 13th keep me in the loop! Best Regards David Armstrong Elkins, WV