Houghton Mifflin Harcourt ended a rough year with signs of improvement, as fourth quarter sales of $261 million were up $19 million from a year ago, with positive EBITDA of $5 million, compared to $(19) million a year ago. As was the case all year, the small trade division was the big bright spot for the company: Fourth quarter trade sales of $55 million were up $5 million. For the full year, trade sales of $184.5 million were up $19 million from a year ago, and adjusted EBITDA of $16 million was up considerably compared to $9.8 million a year […]