Slave owners would hide money in books to keep the cash safe from theft. Add in slaves not knowing how to read or prevented from reading.
Warren Buffett often cites his best investment was a book, titled 'The Intellegent Investor.'
Books cost money, they have a price. Books are or can be a small investment that may yield massive results.
Literal cash was hidden inside books from slaves, and today we can all find value of what is inside a book.
So buy the book you've been thinking of buying. Read it.
You don' t know what you'll find.
Ikeep doing that but neverseem topit together more book cases.