RIVERHEAD BOOKS Sean McDonald, former editor and designer of the Web site and electronic newsletter at Doubleday/Nan A. Talese, was appointed senior editor and online creative director.

THE VAN TULLEKEN COMPANY Marian Helms Hewitt was appointed a partner in the m&a adviser's New York office. She was most recently v-p of business development at Prodigy and held senior corporate development positions at Simon & Schuster and other firms…. Ian Irvine was appointed non-executive chairman. He was previously chairman of the U.K. station Capital Radio PLC and chairman of Reed International PLC.

PAULIST PRESS Stephen Arkin has been named director of sales and marketing. He held the same title at Amacom as well as various positions at Houghton Mifflin, Little, Brown and Oxford…. Brian Galvin, formerly director of sales and marketing at DistanceEd.com, was appointed sales and marketing associate…. Jude Ndukwe was appointed controller, as he had been at Crossroads Publishing.

SCHOLASTIC INC. Reg Maton has been named senior v-p, chief information officer, a position he had held at Symbol Technologies, Tiffany, Olympus America and Standard Microsystems. He also spent 12 years at CBS.

THE CREATIVE CULTURE INC. Nicole Diamond Austin, former associate editor at Simon & Schuster Trade Paperbacks, has been named an associate agent at the New York firm.

THE CROWN PUBLISHING GROUP Brian Belfiglio has been promoted to director of publicity for Crown and Three Rivers Press, where he has worked on campaigns for such titles as The Sweet Potato Queens' Book of Love…. Katherine Beitner has been named to the new position of director of publicity for Harmony Books, in addition to continuing in the same role for Shaye Areheart Books…. Jill Flaxman was promoted to the new position of marketing director for Crown, Crown Business and Three Rivers…. Katherine Dietrich, former manager of national field sales at Workman Publishing, has been appointed director of marketing for Clarkson Potter, Harmony and Shaye Areheart Books.

MALLOY INCORPORATED Carol Bystrom was appointed an East Coast sales representative for the Michigan book manufacturer.

PUBLISHERS WEEKLY Brianna Yamashita has been promoted to associate editor, mass market forecasts.

—Compiled by Mary Ann Tennenhouse