"Chocolate Challenge" is a game-style brochure that contains clues to answer questions about chocolate including its history, harvest and manufacture. For a free brochure, send a stamped, self-addressed, business-size envelope to: Chocolate Challenge, 40 W. 57th St., Suite 1900, New York, NY 10019.

The Roerig Center for Diabetes Control is offering a free booklet,"Recipes for Diabetes Control," which includes some favorite recipes of former New York Mets star Ed Kranepool. For a free copy, write to: Roerig Center for Diabetes Control, 301 E. 57th St., New York, NY 10022.For over 21 years, Henry Haller was executive chef at the White House. Haller retired, but his influence on food continues.An 11-page booklet, "Henry Haller's White House Desserts," features some of Haller's recipes made with Cointreau, a crystal clear orange liqueur from France. To receive a free copy, send a stamped, self-addressed, business-size envelope to: White House Desserts, Myers CommuniCounsel, 11 Penn Plaza, Suite 1000, New York, NY 10001.