"The Non-Linear Field Theories of Mechanics" is a significant textbook in the field of continuum mechanics, regarded as a classic. Originally published nearly forty years ago, it has had a lasting impact on nearly all subsequent monographs on the subject. The third edition includes corrections made by C. Truesdell in his personal copy and is annotated by W. Noll and S. Antman, who explain the work's origins and its influence on modern mechanics. The book, which was originally published as part of the renowned "Encyclopedia of Physics," provides a comprehensive summary of the state of knowledge in continuum mechanics at the time and has contributed to the unification of concepts, terms, and notations in this field.