With ‘Fantastic Beasts and Where to Find Them’ only a few weeks away, J.K. Rowling has published ‘The Magical Congress of the United States of America,’ which will serve as the third and final installment to the collection of tales regarding Magical schools and wizardry in our country.

The stories are all original writings by J.K. Rowling, and were part of the ‘Magic in North America’ series. The works have been published on pottermore.com, and the latest offering explores the roots of America’s secret wizarding governing body called the Magical Congress of the United States of America (MACUSA).

‘The Magical Congress of the United States of America,’ together with the short video, offers insightful background details for the upcoming Warner Bros. Pictures feature film Fantastic Beasts and Where to Find Them. The film, which marks J.K. Rowling’s screenwriting debut, is set in New York in 1926, and will be released worldwide on 18 November 2016.

The new writing reveals how MACUSA was formed and tracks the odyssey of its various headquarters as it moved from an enchanted edifice in the Appalachian Mountains to Williamsburg, Virginia; Baltimore, Maryland; Washington, D.C.; and, finally, to New York City, where it was magically modified to be hidden from No-Majs (the American term for Muggles).

‘The Magical Congress of the United States of America’ also examines MACUSA’s place in American history, including the infamous ‘Country or Kind’ debate during the Revolutionary War, when members of the U.S. magical community questioned to whom they owed their allegiance. Another facet of the story looks at how the Statute of Secrecy—the law preventing wizards and witches from revealing the magical world to No-Majs—evolved.

Pottermore published two previous installments of Magic in North America earlier this year, including ‘History of Magic in North America’ in March. This first piece of writing in the series revealed the history of North American witches and wizards, and in June, Pottermore unveiled the second installment about Ilvermorny, the North American school of magic founded in the 17th century.