Correspondence between Pedro Fueros and virrey concerning mining operations at la Cieneguilla, Sonora. Includes routine documentation of quantities of gold produced and transported to Alamos, plus accounts of depredations suffered by Indians, settlers and miners at hands of Apache marauders. Also, account of discovery of silver deposits at San Marcial. (J. H. Ochs, August 1987)

Letters about campaigns against Opatas and Apaches. Failure to round them up as rebels advised beforehand to abandon area. Governor writes about illness and inability to personally supervise campaigns as he is paralyzed on left Side of body. (A. Dell'acqua, October 1987)

Very detailed report on current condition of missions of Nueva Vizcaya, and new political regime being implemented for their governing; includes notes on doctrinas and missions; religious services rendered to Indians; conduct of missionaries; crops grown; application of civil laws; various community rights; economic conditions; record keeping related to livestock, people etc.; apostates; immorality of Indians; idolatry and its relation to crimes; places apostates inhabit; settlement dispersal in province; congregation of Indians in select reducciones; passport for Indian travel; work of Indians outside missions; care required to prevent desertion of mission Indians; learning of trades; continued hunting and gathering; work of women; various kinds of contamination by outsiders; housing descriptions of mission and non-mission Indians; irrigation; household furnishings; Indian Christian customs; failure to fully acculturate; Indian custom of eating horses; diseases; work at mines; cessation of custom of having yndios de mita in forced repartamiento labor; vagabondage; Spanish language instruction; cesarean medical operation; desertion; pulque consumption; disease resulting in depopulation. (J. Williams, March 1987)