Harry Houdidi's Margery Pamphlet: the Medium Exposed - After sitting with the medium and committee of experts from the Scientific American, Houdini published this expose of Margery. - http://www.pbs.org/wgbh/amex/houdini/sfeature/margery1.html
Skeptical Inquirer: The Search For Margery. - Article by Massimo Polidoro, author of Final Seance: The Story of the Strange Friendship Between Houdini and Conan Doyle. - http://www.findarticles.com/cf_dls/m2843/6_26/94044229/p1/article.jhtml
The Medium and the Magician - Mina Crandon's followers believed she had genuine paranormal powers. Harry Houdini was equally certain she was a fraud. An article for American History Magazine. - http://womenshistory.about.com/library/prm/blmagician1.htm
The Strange Case of Margery: Houdini's Greatest Nemesis - Haunted Museum page on Mina Crandon, known as "Margery," a Boston medium who found herself embroiled in one of the most bitter controversies in American psychic research. - http://www.prairieghosts.com/margery.html
Margery the Medium - Margery the Medium became famous for the strange events that happened at her seances, including sticky white ectoplasm flowing out of her body and the dis-embodied voice of her dead brother speaking through her. - http://www.psychicinvestigator.com/File/folderO.htm