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.
While she submitted to many tests in order to prove the truth of her splendid manifestations of physical mediumship, her real desire was to bring comfort and happiness to humanity, through her wonderful gift.