These engineering drawing texts are great resources for students and professionals interested in engineering. To use them, simply open the book and start reading. They are full of useful information about engineering drawing. When handling these books, be gentle to avoid further damage to the covers and pages. Since they are vintage, the paper might be a bit fragile. Store them in a dry place away from direct sunlight to prevent further foxing or staining. If you notice any loose pages, you can use archival tape to secure them gently. Enjoy exploring the knowledge within these classic texts!