This set of three volumes consists of an illustrated flora of the Northern United States and Canada. Written by Nathaniel Lord Britton, these facsimile books were printed in 1970 by Dover Publications. The books cover a range of topics including history, original/facsimile, and language. The books are in paperback format and are not signed. They are a great addition to any collection of antiquarian and collectible books. The unit quantity is one and the books are printed in English. The region covered is North America and the topic is the United States. These books are perfect for anyone interested in the history of botanical knowledge in America.