These resources are a good starting point for finding mechanical engineering books and handbooks online. They contain a wide range of e-books on science, engineering, and technology-related topics. For additional help you could try the E-Books at Iowa State University guide.
Don't see what you're looking for in the links above? Not all books are available online. Try using the Library's Quick Search to see if we have access in print, or use WorldCat and Interlibrary Loan to find and request books we don't own.