In the Archivo General de Indias in Seville there exists a remarkable sample of private correspondence between two of the most powerful figures of the Bourbon Age in Spanish American history. The principal writer is Zenón de Somodevilla y Bengoechea, marqués de la Ensenada and minister of Hacienda, War, and Indies and Marine since 1743, and subsequently holder of other posts that made him, in a contemporary opinion, “Secretary of Everything.” His correspondent is José Antonio Manso de Velasco, conde de Superunda and viceroy of Peru from 1745 to 1761, the longest serving and among the most influential of the Peruvian viceroys. The Seville correspondence consists mainly of just seven generally brief letters. The private character of these letters, however, along with the close relationship between the two men and the roles they occupied, makes them historically fascinating. Excerpts are published here for the first time, in both Spanish and English translation.