Beginning research into guns that were primarily used in the NE part of Pennsylvania, 1840-1870 era. Can anyone refer any books that might contain helpful information as to "usual" type of lock (flint or percussion), barrel length(smooth or rifled), bore size, full or half stock, etc. I have cheked with a historical society in one county, but this is kind of specific for them to be of much help. Appreciate any book titles or references I can look into re: this. Thank you