small hardcover that contains "errors of Grammar, capitalization, punctuation, business letters, social letters, words often mispronounced, words often misspelled. Also the errors in the use of words - Mistakes of the Purists, half-baked criticism, the right preposition, general faults and words often used incorrectly.
Alpheus Sherwin Cody 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.