Related Clues:

• See 18-Down
• Snack since 1912
• Black-and-white snack
• Diner sandwich
• Cookie with a creme center
• See 49-Down
• The 'pneumo' in pneumonia
• Association
• See 47-Across
• 1994 Peace Nobelist
• Come down
• Chocolate snack
• Chest organ
• Hydrox rival
• Picnic hamperer