"Still at the top of my list for biographies are the old Landmark series of books that were written many years ago" - Cathy Duffy. "One of the most critically acclaimed, best-selling children's book series ever published" - New York Times Book Review. When two reviewers with such diverse perspectives agree on a series of books, they must be good. These titles were originally written 30 to 40 years ago, and provide exceptional insight into events and time periods covered. Classics.