The product is a lot of 7 first edition hardcover books from the KILLING series by authors Bill O'Reilly and Martin Dugard. The series explores various topics related to American history, political history, and world events, with a focus on historical and political themes. Each book in the lot is illustrated and features a dust jacket, making them a valuable addition to any collection of nonfiction works. The books are published by St. Martin's Press in the United States and are all written in English.