Catholic Encyclopedia: Spiritism: History and methods of Spiritism (here distinguished from Spiritualism) and the dangers inherent in its practice and beliefs.
Colin Fry medium for Living TV: Is the television medium Colin Fry genuine? Sceptic investigates the claims of mediumship and the charges of fraud made in Psychic News.
Didaskalos Ministries: Spiritualism: A detailed look at Spiritualism, or Spiritism, and how it is in direct contrast to Christianity.
Exposing Spiritualism: Photos, newspaper articles, and other materials documenting stage magician and escape artist Harry Houdini's challenges to mediums and Spiritualism.
Modern Spiritualism: A Subject of Prophecy and a Sign of the Times: Book critical of Spiritualism, from a Seventh-day Adventist perspective. Full text online.
Spiritualism Exposed: Margaret Fox Kane Confesses Fraud: Founder of modern Spiritualism confesses how the movement was built on a lie. [New York World]
Stewarton Bible School: Spiritism: Bible study on the dangerous error of consulting or heeding evil spirits.
The Birth of Spiritualism--The Story of the Fox Sisters: Brief article on the origins of modern Spiritualism.
The Skeptic's Dictionary: spiritualism (spiritism): Sceptical view of Spiritualism and its associated parts such as mediumship.