WASHINGTON - Motorcycles and skiers, baseball players and lovers, a 40-stamp series featuring America's biggest, tallest and deepest, from sea cliffs to bison to waterfalls and lakes. They're all commemoratives planned for next year by the U.S. Postal Service.

Comic book superheroes brighten one set of stamps. Others feature Benjamin Franklin, explorer Samuel de Champlain, Florida wetlands and snowflakes.