For decades, economists have pointed to 17th-century tulipmania as a warning about the perils of the free market. Writers and historians have reveled in the absurdity of the event. The incident even provides the backdrop for the new film Tulip Fever, based on a novel of the same name by Deborah Moggach.

The only problem: none of these stories are true.

What really happened and how did the story of Dutch tulip speculation get so distorted? Anne Goldgar discovered the historical reality when she dug into the archives to research her book, Tulipmania: Money, Honor, and Knowledge in the Dutch Golden Age.