ABSTRACT The notes taken by Byron Gentry in a class with Ida Rolf circa 1955 give a bird’s-eye view into the evolution of the Rolfing ten-session series (or ‘Recipe’) and the thinking of Dr. Rolf. Archivist Jeff Linn discusses the ‘Gentry Notes’ as the first historical documents that can be relied on in explaining the development of structural integration (SI) as opposed to what might be called hearsay evidence previously.