K4PSH 1959 Memphis, Tennessee

The operator was Shular Wilkes Dearing, Silent Key (1900 - 1968).
His QSL shows a photo of a 1920 station, but no record has been found of him being licensed before the call K4PSH.
He did have a station, because a description of his station was published in the March 1920 issue of Electronics World.

QSL from the estate of K4DXS
Info courtesy of W5KNE