The following sources were consulted in the preparation of the article “Classic board games that vanished without explanation.”
- Milton Bradley Company Voice of the Mummy board game, 1971
- What’s In That Game Box? – Bermuda Triangle (1976)
- Board game: Which Witch?
- Board game: Green Ghost Game
- Board game: It from the Pit
- Séance from Milton Bradley (1972)
- Board Game: Mystery Mansion
- King Oil
- Board game: Tornado Rex
- The Omega Virus