This historical Avon romance novel, titled "Heart of Thunder" by Johanna Lindsey, is a captivating read for adults. The book is part of a series of historical romances and was published in 1983 as a 12th printing. The paperback format makes it easy to carry around and read on the go. The novel is set in the United States and follows the story of a romance between the main characters. The author, Johanna Lindsey, is an expert at writing historical romances and this book is no exception. The intended audience is adults who enjoy reading about romance in the historical context. This book is a must-have for any fan of the genre and will be a valuable addition to any collection.