William Walker Atkinson,
Genuine Mediumship; or, The Invisible Powers
“ One of the rarest, and at the same time the most eagerly sought after phase of mediumship, is that known as "materialization mediumship." In this 263phase of mediumship the decarnate spirit is able to draw upon the vital forces of the medium, and those present at the seance, to such effect that it may clothe itself with a tenuous, subtle form of matter, and then exhibit itself to the sitters in the same form and appearance that it had previously presented in its earth life. ”
