FIGURE The work of medical pioneer Maude Abbott (1869-1940) is being commemorated with a special millennium stamp from Canada Post. Abbott, author of The Atlas of Congenital Cardiac Diseases and a world authority on heart defects, helped found the Federation of Medical Women of Canada in 1924. The FMWC, which first lobbied for a stamp in 1989, called it a "fantastic tribute." The stamp, one of 68 commemorating prominent Canadians, will be available Jan. 17, 2000.