Series of 10 short letters from Corbalan to virrey concerning various issues of provincial administration. Issues mentioned royal fifth to be extracted from all privately held gold, silver in Sonora; legal case against Torres; regulations pertaining to recovery of gold by individuals; Lumbreras' account with real Caja; Corbalan's delay in transmitting Cuenta general to office of virrey, virrey's response; revenue collected by real Caja through sale of tobacco, gunpowder, playing cards; Prestamero's repayment of debt owed real hacienda; lastly, index of letters from Corbalan to virrey from 17 September through 25 October, 1773. (J. H. Ochs, January 1988)