HMHC - Houghton Mifflin Harcourt Company 2021 Q2 - Results - Earnings Call Presentation August, 06 2021 06:15 PM Houghton Mifflin Harcourt Company The following slide deck was published by Houghton Mifflin Harcourt Company in conjunction with their 2021 Q2 earnings call. For further details see: Houghton Mifflin Harcourt Company 2021 Q2 - Results - Earnings Call Presentation