I know ,with fair certainty, a leman or a Hawkin but even with these a mediocre counterfieter could get over on me,as far as the longrifles go,I'm totally lost as far as knowing a Beck or a Lancaster etc.I do however know fine work from garbage or even excellent from just good work. In short I'm at the second or third rung up the ladder and would like to get a good book to set me straight.