I have many such books and there are many out there on shelves, etc., long out of date, the only thing you can do is recopy one if you want someone else to share it and that is what I went to great expense to do. There are many others that have done the same thing with their choice old books. I on the other hand expand the book and make a study guide so anyone can easily understand what the other is saying and make referances to many other authors in the study guide. I am not in the business of selling old books, many are and they have huge list to choose from. I spent a small fortune and will always buy books of this nature in search of one more clue.
The only clue I will give is many of my best authors are born right after the civil war. War babies you might say! Otherwise I have a booklet explaining my methods based on what I have learned from many such books and in this booklet you will see why I started what I call The School of Self-Apllied Prevention. If I told you what books I use for this, there would be no point in what I do as a hobby. My hobby is small enough that I don't expect I will ever sell enough books to ever cover the cost of my printing expense, most people have no interest in old books unless they are free.