Houghton Mifflin Co. - 02/23/04

Houghton Mifflin Company Announces Fourth Quarter and 2003 Annual Results Conference Call

Houghton Mifflin Company plans to host a fourth quarter 2003 financial results conference call on March 4, 2004 at 11 am EST.

The Teleconference Dial-In Number(s):
United States: (888) 428-4472
International: (651) 291-0561

The teleconference will be available for replay starting on March 4, at 6:00 PM and ending on March 18, 2004 at 11:59PM.

Replay telephone numbers:
United States: (800) 475-6701
International: (320) 365-3844
Access Code: 721865

Chief Executive Officer, Anthony Lucki, and, Executive Vice President, Chief Operating Officer and Interim Chief Financial Officer, Sylvia Metayer, will lead the call.

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About Houghton Mifflin Company
Boston-based Houghton Mifflin Company is one of the leading educational publishers in the United States; publishing 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, and 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 website can be found at www.hmco.com.

CONTACT:
Joseph P. Fargnoli
Vice President, Treasurer
Houghton Mifflin
617-351-3351
joseph_fargnoli@hmco.com