From time to time I see references to old barbering books. I would like to know which old books anyone finds to be their favorites/best and what makes them so. While shaving with a str8 is by nature vintage, there are more vintage ways to go about some aspects than others (e.g. old barber hones, strop conditioning with lather, etc.) I would love to find some of these old primary sources. The few exerpts I have read have some great fine points that really help me. And it seems these old texts have time-tested authority behind them.

Thanks!

Dale