The “Test Item File for American Government” by Wilson and Dilulio is a paperback book published in 2004 that serves as a study guide and test prep resource for students studying government. The book contains test questions and materials related to the subject of American government, authored by James Q. Wilson and John J. Dilulio. With a focus on government as its subject, this book is a valuable tool for those looking to review and prepare for tests or exams in the field of American government.