For aviation enthusiasts and collectors, this lot of four signed books is a must-have. The books cover various topics of aviation history, from the TWA era to the Northrup aircraft. Written by a mix of authors, all books are in English and are paperback formats. Each book in this lot is signed by the author, making it a unique and valuable addition to any collection. Whether you're a fan of nonfiction narratives or simply interested in aviation history, this lot is sure to impress. Don't miss out on the chance to own these rare and fascinating books.