I've had this book, which belonged to my grandfather Sig Levy, for many years sitting on a table. I'd glanced through it a few times but it wasn't until this blog prompt came up that I spent more time with it. Remember, my grandparents saved everything.
Here's the first page.
When I looked at this it occurred to me to search for it to see if I could find any history on it. While I didn't find history, I did find an identical book selling on eBay for $31.45.
Look at that - a Profit and Loss Statement for May. Actually, there are pages and pages for each month but this is just an example.