American engineer and author who developed the Reciprocal System of Physical Theory, a comprehensive system for explaining the structure of the physical universe. (1898-1990)

From the Ra Contact: Larson had understood or visualized with greater accuracy the physical universe; his physics, though lacking of things regarding gravity and “n” dimensions, is a correct system as far as it is able to go; he brought this material through in his incarnation for use primarily in fourth density.