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Two models shape the basis of modern economic growth theory, known as the Solow model and the Ramsey-Cass-Koopmans model. Both models are usually presented by a linear narrative. The Solow model would represent a first basic model to understand economic growth. The Ramsey-Cass-Koopmans would come to enrich the basic Solow model, by relaxing the constant propensity to save hypothesis, making the savings decision derived from an utility maximizing behavior. The purpose of this work is to challenge this linear narrative. This dissertation introduce other subjects that were influential to the development of growth theory in the sixties, but don’t fit in the linear narrative: the turnpike theorems and the two-sectors models of growth. These two subjects operate as links that connect three different scientific communities, represented by the actors Robert Solow, Tjalling Koopmans and David Cass, and help to evidence that the relation between the Solow model and the Ramsey-Cass-Koopmans model is less linear than usually presented. Key-words: History of economic thought, macroeconomics, mathematical economics

A via não tão rápida entre Solow e Ramsey-Cass-Koopmans: o desenvolvimento da teoria do crescimento econômico na década de 1960