Harris Peyton Mosher photographs of anatomical preparations

Harris Peyton Mosher (1867-1954) was born in Woodsford, Maine in 1867. Mosher was known for his work in developing the field of otolaryngology through research, novel techniques and instruments, and his role in national otolaryngology societies. He received his MD from Harvard Medical School in 1896 and trained in ear, nose, and throat centers in Germany. He returned to the United States and became associated with the Massachusetts Eye and Ear Infirmary and as instructor at Harvard Medical School. He developed the first course in sinus anatomy in the US, which endured for 35 years and was referred to as "Mosher's course."

In 1919 he was appointed Professor of Laryngology at HMS and Chief of Laryngology at the Massachusetts General Hospital. In 1932 he was appointed to the Walter Augustus LaCompte Chair of Otology at Harvard, becoming the second person to hold two chairs at Harvard. Mosher was chosen as president of the American Board of Otolaryngology upon its formation in 1924 and served in that capacity for 25 years. He retired in 1939.

Mosher received numerous awards and recognitions, including the Semon Medal from the Royal Society of Medicine of London, the Gold Medal from the American Laryngological Association, a services medal from the American Academy of Ophthalmology and Otolaryngology, as well as his intranasal ethmoidectomy technique and his method for removing safety pins swallowed by babies.

A 1930 census identifies Mosher as white. He married Helen Augusta Rothwell in 1913.