The Colorado River - postcard produced by the Salesian Mission of Patagonia and Tierra del Fuego, Argentina. The Colorado River marks most of the political limit between the provinces of Neuquen and Mendoza, and between Rio Negro and La Pampa. The Salesians of Don Bosco (or the Salesian Society, originally known as the Society of St. Francis de Sales) is a Roman Catholic religious order founded in the late nineteenth century by Saint John Bosco.