Mary Trump‘s new book has set a record for publishing company Simon and Schuster with the most copies sold on release day.

The book, titled Too Much and Never Enough: How My Family Created the World’s Most Dangerous Man, sold more than 950,000 as of Tuesday, including sales from pre-orders and audiobooks.

In the book, Trump made now-famous claims about her uncle, including claims that President Donald Trump paid someone to take his SATs for him and that he had gone to the movies while his brother (Mary’s father) died in the hospital.

“‘Too Much and Never Enough’ has entered the national conversation in a way that few books ever do, becoming a cultural phenomenon and must-read for anyone seeking to understand the singular family dynamic that produced the most powerful man in the world today. It is at once a revealing psychological portrait and a work of historic importance,” Simon & Schuster CEO Jonathan Karp said in a statement.

White House Press Secretary Kayleigh McEnany has called the book a “book of falsehoods.”

This book is not the first big hit for Simon & Schuster. In 2018 the company published Bob Woodward‘s Fear: Trump In The White House, which sold 750,000 copies on its first day, and set a record for the company. The company also published former National Security Adviser John Bolton‘s tell-all The Room Where It Happened two weeks ago, which sold 780,000 copies in its first week.

President Trump and his allies have tried to push back on the publishing of these books. Robert Trump, the president’s brother, had tried to prevent Mary Trump’s book from being released with a temporary restraining order in New York, but the order was ultimately overturned by a judge the day before the book’s release.

“Too many words, with too many meanings. The cost of the litigation that was settled should have been finalized with more specifics, more clarity, if the current situation was even comprehended, at the time the Agreement was signed,” Judge Hal Greenwald said in his decision.