This is a rare and valuable set of two hardcover books titled "Great Rivers of the Rio Grande" by Paul Horgan. The first edition volumes 1&2 were printed in 1954 by Rinehart & Co in the United States. The books cover the history of the Rio Grande region in North and South America, and are a must-have for any collector of antique books. The set includes special attributes such as the volumes 1&2, 1st Edition, and the original print. The books are in excellent shape and would make a great addition to any library.