Contents
Houghton Mifflin
????-2007
SVG NEEDED |
Houghton Mifflin Harcourt
2007-2012
SVG NEEDED |
Upon purchasing Harcourt, the company was renamed to Houghton Mifflin Harcourt.
2012-present
SVG NEEDED |
SVG NEEDED |
Upon purchasing Harcourt, the company was renamed to Houghton Mifflin Harcourt.