I think this is an important book. The full title is Investing in U.S. Financial History: Understanding the Past to Forecast the Future by Mark J. Higgins

From my point of view as a small investor, it is a useful guide to things which have happened and may be like what can happen to investments. I believe that the more financial history you know, the better you can prepare for the future.

It covers issues such as the national debt, the Federal Reserve, financial regulations and many other financial issues. I highly recommend this book as it covers important issues and historical events clearly and interestingly.