The Ascent of Money: A Financial History of the World by Niall Ferguson

Another book that could be a blog?

While Niall Ferguson's book does present some interesting history on how a system of money and finance came into existence, it is probably something that could be better read in a condensed format somewhere else.

This book is peppered with self-aggrandizing comments, and "I-called-its", that makes it a bit tough to believe, and would probably work better in an informal personal blog than a formal history. It is true that no history is completely objective, but the author should at least have that intention.

As one final note the book lacks consistency. It jumps from one event to another with no set reason, and seems to accelerate to current times (1990-2008) and stay there for over half the book. Any explanations of financial products, like puts, options, swaps, bonds, etc...are not easy to understand, and might as well be left out.
In closing, save your credit and just google blogs on the financial crises, or finance history, you will find much the same material, and at least you will have visual aids.