Published in 1934, Coptic Sounds by William H. Worrell of the University of Michigan provides an authoritative exploration of the phonetic elements within the Coptic language, with the aim of tracing their historical development. The book is divided into two parts: the first presents Worrell's comprehensive stance on broad linguistic questions, while the second, augmented by an appendix by Dr. Hide Shohara, offers an in-depth phonetic analysis. Shohara's contributions, derived from her studies under Professor Clarence L. Meader, complement and sometimes challenge Worrell's findings, adding a valuable perspective. The study utilizes both traditional egyptological symbols and precise phonetic notations to reveal the physiological and psychological nuances of Coptic sounds. Extensively referencing established scholars and texts, Worrell's meticulous research is intended to benefit phoneticians, copticists, and egyptologists by enhancing the understanding of Coptic phonology and its historical context. The collaboration and guidance from noteworthy academics such as Professor Carl Schmidt and Professor Charles C. Fries further cement the book's status as a critical resource in the field.