The work of Royal Raymond Rife, who was among the first to discover and successfully use the phenomenon of resonance to kill pathogens and even cure terminal cancer patients, was met with positive feedback in America in the 20th century.

You can read more about Rife’s life and work in the sub-menus of this site.
The photo shows the inventor (right) and Dr Kendall, a respected doctor who supported Rife and his work in many ways.