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How Trick-or-Treating Became a Halloween Tradition | HISTORY
Trick-or-treating - Wikipedia
The history of trick-or-treating, and how it became a Halloween tradition
The History of Trick-or-Treating Goes Back Centuries
Everything You Need to Know About Trick-or-Treating - Real Simple
How Trick-Or-Treating Became A Halloween Tradition - Mashed
The History of Trick-or-Treating on Halloween | TIME
The Dark and Fascinating History Behind Trick-or-Treating
Halloween Trick-or-Treating Guide and Etiquette | LoveToKnow
Why Do We Trick or Treat? | HowStuffWorks