History.UK.com: Concealed Ritual Objects and Protection from Witches
- Ian Evans provides a quick guide to the ritual objects that can be found hidden within the structure of a house, and what to do if you find one. He also mentions ritual marks.
- http://www.history.uk.com/house_detectives/index.php?archive=5

Apotropaios
- Brian Hoggard describes and explains the history of house protection magic in Britain. Photographs of artefacts are presented and explanations for their use discussed.
- http://www.apotropaios.co.uk

Current Archaeology: How to Kill a Witch
- An illustrated article on witch bottles and their use, in particular one found buried in a ruined house at Reigate, just south of London.
- http://www.archaeology.co.uk/ca/timeline/postmed/witch/witch.htm

BBC: Artefact Recalls Witches' Shadow
- A "witch bottle" dated to c.1830 is discovered buried in foundations in the Lincolnshire village of Navenby.
- http://news.bbc.co.uk/2/hi/uk_news/england/lincolnshire/3437241.stm

Deliberately Concealed Garments Project
- The Textile Conservation Centre at the University of Southampton explores the folk tradition of concealing objects in the fabric of buildings. Includes a database of garment finds.
- http://www.concealedgarments.org/