The Mediumship of Ethel Post-Parrish
Ethel Post-Parrish became a prominent American physical medium. Her phases of direct voice and materialization attracted world-wide attention. She was also a splendid clairvoyant and an outstanding platform message bearer.
In 1927 Ethel Post-Parrish opened a church and established a school for the education of Spiritualist ministers and the development of mediums in Miami, Florida. To escape the intense heat and humidity of Florida’s summers, in 1932, she opened a summer camp and school for mediumship in Ephrata, Pennsylvania. This is called Camp Silver Belle so named for Mrs. Parrish’s Indian guide Silver Belle.
http://www.gotsc.org/MaterializationSilverBelle.htm
only to here and place link above
Mediumship and Life after Death 