Houghton Mifflin Co. - 10/28/05

Houghton Mifflin Company Announces Third Quarter 2005 Results Conference Call

BOSTON—October 28, 2005—Houghton Mifflin Company will host its third quarter financial results conference call for investors and analysts on Wednesday, November 9, 2005, at 10:00 a.m. EST.

Teleconference dial-in numbers:
United States: 866-322-2542
International: 706-634-7466
Conference ID: 2031224

The teleconference will be available for replay starting on November 9, 2005, at 12:00 p.m. EST and ending on November 23, 2005, at 11:59 p.m. EST.

Replay telephone numbers:
United States: 800-642-1687
International: 706-645-9291
Conference ID: 2031224

Houghton Mifflin President and Chief Executive Officer Tony Lucki and Executive Vice President, Chief Financial Officer and Chief Operating Officer Steve Richards will lead the call.

About Houghton Mifflin
Boston-based Houghton Mifflin Company is one of the leading educational publishers in the United States, with over $1 billion in sales. Houghton Mifflin publishes textbooks, instructional technology, assessments and other educational materials for elementary and secondary schools and colleges. The Company also publishes an extensive line of reference works and award-winning fiction and nonfiction for adults and young readers. Houghton Mifflin offers computer-administered testing programs and services for the professional and certification markets. With its origins dating back to 1832, Houghton Mifflin combines its tradition of excellence with a commitment to innovation. The Company's Web site can be found at www.hmco.com.