This is a set of three vintage Britannica books from the years 1992, 1993, and 1994. They are hardcover books and written in English. The books are numbered and have special attributes. The author and publisher are unknown, but the books cover the topic of Britannica and the subject of history. These books are a must-have for any collector of antiquarian and collectible books and magazines. 1994 unopened 1993 unopened