Who authored The Undertaker's Manual, the first embalming textbook in the U.S.?

The correct answer is that Dr. Augustus Renouard authored The Undertaker's Manual, recognized as the first embalming textbook in the United States. This book was significant in providing a structured approach to embalming practices during a time when the profession was evolving. Renouard's work contributed to the formalization of embalming techniques and set a standard for both funeral service and the education of funeral professionals. His manual included not just the technical aspects of embalming but also insights into the care of the deceased, making it a comprehensive resource for early funeral practitioners. This foundational text played a pivotal role in enhancing the professionalism of the field and educating future morticians.