The Elements of Style co-author is a two-person team consisting of William Strunk Jr. and E.B. White. William Strunk Jr. was an English professor at Cornell University who wrote the original version of The Elements of Style in 1918. E.B. White was an American writer and poet who revised and expanded the book in 1959. Together, they created the definitive version of The Elements of Style, which has become a classic reference book for writers.