1. [n. d.]. Chevreul pendulum - Oxford Reference. https://doi.org/10.1093/oi/authority.20110803095606403 [n. d.]. Chevreul pendulum - Oxford Reference. https://doi.org/10.1093/oi/authority.20110803095606403
2. [n. d.]. The Electric Mystifying Oracle. https://www.museumoftalkingboards.com/myst.html [n. d.]. The Electric Mystifying Oracle. https://www.museumoftalkingboards.com/myst.html
3. [n. d.]. Museum of Talking Boards Collection. https://photos.google.com/share/AF1QipODnzQ1kiQtMzolJ5n5n__3QkcmOuLGPxZ301kS7RWzplrr34o5IIUkszblm4dU6g?key=ZXpoNkVVOVg0UmR6U1A2YWN0VlBBNVpQSXNUYUFn [n. d.]. Museum of Talking Boards Collection. https://photos.google.com/share/AF1QipODnzQ1kiQtMzolJ5n5n__3QkcmOuLGPxZ301kS7RWzplrr34o5IIUkszblm4dU6g?key=ZXpoNkVVOVg0UmR6U1A2YWN0VlBBNVpQSXNUYUFn
4. [n. d.]. Museum of Talking Boards Planchettes. https://www.museumoftalkingboards.com/planchet.html [n. d.]. Museum of Talking Boards Planchettes. https://www.museumoftalkingboards.com/planchet.html
5. [n. d.]. Ouija Game | Ouija. https://shop.hasbro.com/en-us/product/ouija-game:86117134-5056-9047-F5E1-46EB2553A56A [n. d.]. Ouija Game | Ouija. https://shop.hasbro.com/en-us/product/ouija-game:86117134-5056-9047-F5E1-46EB2553A56A