Correspondence concerning observations made by Mariscal de Campo while visiting Villas in Nuevo Santander; comments on mines inspected in Tamaulipa, recommendations for various modifications in mining procedures and policies; Mariscal informs of illegally imported tobacco confiscated by his men; describes state of hacienda de Dolores where Indians receive little religious education, stresses need for such influence as well as for proper protection of Indians by all missions; itemizes taxes and other money collected at each town for real hacienda; Mariscal's companion in charge of 'repartimiento'; both men involved in selection of gobernador Interino. (L. Kerr, October 1988)