The product is a collection of manuals focused on mechanics, milling machinery, and lath engineering, drilling and more authored by many experts and published by the International Textbook Company in the United States. These manuals are in English and are illustrated, making them a valuable resource for home study and professional development in the field of machinery leadership. The paperback bindings ensure durability and easy access to the valuable information contained within these manuals, making them a must-have for collectors and enthusiasts of mechanical engineering... 30+ manuals in solid condition... See pictures for details... Happy Bidding!!