Arthur Conan Doyle on the Davenport Brothers - Excerpts from The History of Spiritualism Vol I. - http://www.classic-literature.co.uk/scottish-authors/arthur-conan-doyle/the-history-of-spiritualism-vol-i/ebook-page-88.asp
Davenport Brothers, article by Joe Nickell - The Davenport brothers: religious practitioners, entertainers, or frauds?(Special Issue: Science and Religion: Conflict or Conciliation?). Article by Joe Nickell for the Skeptical Inquirer, 7/8 1999. - http://www.findarticles.com/cf_dls/m2843/4_23/55208044/p1/article.jhtml