Victor Zammit has listed the following links for information about various materialization mediums:

Elizabeth S and May E Bangs (known as the Bang Sisters) of Chicago, Illinois

http://www.users.globalnet.co.uk/~bretty/articles_bangs1.html

Arnold Clare

http://www.fortunecity.com/roswell/seance/78/aclare.htm

Florence Cook

http://www.survivalafterdeath.org/mediums/cookflorence.htm

Margery Crandon

http://www.survivalafterdeath.org/mediums/crandon.htm

Stella Cranshaw, better known as Stella C.

http://www.survivalafterdeath.org/mediums/stella.htm

Frank Decker

http://www.fortunecity.com/roswell/seance/78/deckerg.htm

Elizabeth Hope who worked under the pseudonym of Mme. d'Esperance

http://www.survivalafterdeath.org/mediums/desperance.htm

The Eddy Brothers

http://www.survivalafterdeath.org/mediums/eddy.htm

William Eglinton

http://www.survivalafterdeath.org/mediums/eglinton.htm

Alec Harris whose wife documented his mediumship in the book They Walked Among Us

http://website.lineone.net/~enlightenment/alec_harris.htm

Minnie Harrison

http://www.survivalafterdeath.org/harrison/index.html

Cecil Husk

http://www.survivalafterdeath.org/articles/barrett/years.htm

Stainton Moses, an Anglican clergyman

http://www.survivalafterdeath.org/mediums/moses.htm

Eusapia Palladino

http://www.survivalafterdeath.org/mediums/palladino.htm

Estelle Roberts

http://www.harvestfields.ca/ebook/02/033/10.htm

Rudi and Willy Schneider

http://www.fortunecity.com/roswell/seance/78/schneidr.htm
http://www.survivalafterdeath.org/mediums/schneider.htm

Hunter Selkirk

http://www.fortunecity.com/roswell/seance/78/selkirk.htm

Jack Webber

http://www.fortunecity.com/roswell/seance/78/webr.htm