"Only the three Scotch turbines—first patented in the 1840s—are known to exist in the United States... This acute shortage of extant early hydromachinery is the principal reason why the technological history of the water motor remains obscure and relatively poorly documented...Recently, however, the discovery of a unique turbine located on a plantation at Ponce, near the south coast of Puerto Rico, promised to open a new window on the past... The turbine at Hacienda Buena Vista…is the only pre-Scotch type-known to exist and is the sole extant example of a pioneer and historically important machine that was invented at the close of the 17th century by Dr. Baker... The Buena Vista turbine is, in effect, a missing link in the evolution of mechanical artifacts better known to the historians of technology." (The Journal of the Society for Industrial Archeology, Vol. 4, No. 1 , pp. 55–58)."