Sherwin Cody [SEP] date of death
Sherwin Cody
Alpheus Sherwin Cody (November 30, 1868 – April 4, 1959) was an American writer and entrepreneur who developed a long-running home-study course in speaking and writing and a signature series of advertisements asking “Do You Make These Mistakes in English?” A critic of traditional English education, Cody advocated colloquial style and grammar. His course, presented in a patented workbook format which he described as self-correcting, was purchased by over 150,000 students from its inception in 1918. He published essays
As a business writer, he emphasized practical life goals such as sales, advertising and letter writing. 
Cody marketed his course on the English language from 1918 until his illness and death in the late 1950s, when it was sold to the US School of Music and later discontinued. The course was revised in the 1930s with an increased emphasis on speaking (perhaps in reaction to Dale Carnegie’s "How to Win Friends and Influence People").
Selected Works of Sherwin Cody.
- 1893 "Life’s Philosophy