Houghton Mifflin Co. - 05/03/05

Houghton Mifflin Company Announces First Quarter 2005 Results Conference Call

BOSTON—May 3, 2005—Houghton Mifflin Company will host its first quarter 2005 financial results conference call on Tuesday, May 10, at 10:00 a.m. EDT.

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

The teleconference will be available for replay starting on May 10, 2005, at 1:00 p.m. EDT and ending on May 24, 2005, at 11:59 p.m. EDT.

Replay telephone numbers:
United States: 800-642-1687
International: 706-645-9291
Access Code: 6053773

Houghton Mifflin President and Chief Executive Officer Anthony Lucki and Executive Vice President, Chief Financial Officer and Chief Operating Officer Stephen 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.