Henry Oscar Houghton was an American publisher and one of the co-founders of Houghton Mifflin Company. Some synonyms for his name might include "publishing pioneer," "literary entrepreneur," or "book industry pioneer." Houghton's contributions to the publishing world helped shape the industry into what it is today, and his legacy lives on through the continued success of Houghton Mifflin Harcourt. Other words that could be used to describe him include "innovator," "visionary," or even "maverick." While his name may not be as well-known as some other publishing giants, Houghton's influence on the world of books cannot be overstated.