This is the first book I remember that uses "Laws" for the structure of the content. Since then you see it frequently and I used it recently to write about the Seven Laws of Blogging. So even the structure has had an influence.

Obviously, you can buy the recent edition of the book from Amazon, but you'll miss the poems by ... and the comments from Sallie Rasberry. So I suggest looking for the original edition.

On the web Seeing Money has a list of the laws.