The book "The Wars of the Roses; or, History of the Struggle of the Yorks and Lancasters" is written by the author John G. Edgar and is a classic narrative about one of the most difficult periods in English history. The author describes in detail the events of the era of the Wars of the Roses (1455-1485), when the families of York and Lancaster waged a fierce struggle for the throne of England. This book recounts the intrigues, betrayals, battles, and bloodshed that accompanied this long conflict that culminated in the Tudor victory in the person of Henry VII. The story of the Wars of the Roses remains one of the most interesting and meaningful parts of English history, and John G. Edgar's book helps readers better understand and experience the complexity and drama of this period.