Ketcham was a student of Edward Angle at his Angle School of Orthodontia. He graduated from the school in 1902 and practiced in Colorado until his death. He published more than 40 articles in the Dental and Orthodontic journals between 1902 and 1935. Ketcham served as the first president of the American Society of Orthodontists from 1928 to 1929. He led the pioneering effort to make sure that members also joined local, state, or national dental societies such as the American Dental Association.
