Related Clues:

• Tale beginning?
• One less than twice
• First word of 'Shrek'
• First word of a fairy tale
• "___ Upon a Mattress"
• "__ I built a railroad ...": Depression song lyrics
• If ever
• Fairytale beginning
• Having no sequel
• ___ in a lifetime
• ''___ upon a midnight dreary ...''
• Pistol dueler's allotment, usually
• At an earlier time
• First word of ''The Raven''
• In other days