The Elements of Style by William Strunk Jr. & How To Speak And Write Correctly by Joseph Devlin

Joseph Devlin wrote practical guides on language and communication, helping readers improve their speaking and writing. His works include How to Speak and Write Correctly and The Art of Speak, Listen and How to Write. He also compiled a dictionary of synonyms and antonyms.

William Strunk, Jr. is best known for his foundational guide to clear writing, The Elements of Style. This essential handbook, along with its illustrated version, has helped countless writers refine their prose for over a century.