Related Clues:

• First word of 'Shrek'
• First word of a fairy tale
• "___ Upon a Mattress"
• "__ I built a railroad ...": Depression song lyrics
• If ever
• Fairytale beginning
• ___ in a lifetime
• ''___ upon a midnight dreary ...''
• At an earlier time
• First word of ''The Raven''
• In other days
• When the time comes that
• Popular story starter
• Unrepeated
• Way back in time