The Century Handbook of Writing
by Garland Greever, Easley S. Jones
Publisher: The Century Company 1927
This handbook treats essential matters of grammar, diction, spelling, mechanics; and develops with thoroughness the principles of sentence structure. Larger units of composition it leaves to the texts in formal rhetoric. 
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by Robert Louis Stevenson - eBooks@Adelaide
Essays on the Art of Writing collect seven important essays on authorship. Written more than a century ago, these essays are full of insight for today's readers and brimming with still-applicable wisdom for modern writers.
by Rowan Wolf - Smashwords
It was John Gardner -- legendary teacher of the craft -- who said that the elements of fiction, like the words in a language, are finite. I set about to verify this by scouring for and collecting authors' quotes about them.
by Edwin A. Abbott - ManyBooks
Almost everyone can be taught to write clearly. Force, elegance, and variety of style are more difficult to teach and learn; but clear writing can be reduced to rules. To teach the art of writing clearly is the main object of this book.
by Hugo Erichsen - WP Co
Contents include: Eccentricities in Composition; Care in Literary Production; Speed in Writing; Influence upon Writers of Time and Place; Writing under Difficulties; Aids to Inspiration - Favorite Habits of Work; Literary Partnership; etc.