Series of documents concerning the exploration of the Rio de San Marcos to the Baya of the Espiritu Santo by Martinez. Other journals by Alonso de Leon. He is giving a Saint name to every Arroyo, Rio, Valle they find. They also refer to the encounters with the Indians and the gifts they gave them. Usually a horse, jewels, and some cloths. The Spaniards met the gobernador of the Texas Indians. Their impression was that the Indians were very clean and on that occasion they ate tamales de maiz y atole. Alonso de Leon refers to the first celebration of Corpus in Texas in the year 1690. He also mentions how they rescue French people. In the big rancherias they try to count the Indians some group of Indians were up to 490. Leon refers to the astrolabe used to used to observe the sun for orientation including astronomical notes on folio 434. Leon discovers the Bahia de Espiritu Santo. (D. Bautista, July 1990)