31. "La Salvadora empresa minera, los triunfos del señor Simon I. Patiño" Creator: Unknown Author Collection: Alfredo Montalvo Bolivian Digital Pamphlets Collection Location: Oruro Publisher: Imp. De El Tribuno Publication Place: Oruro Format: Book
32. "La Realenga, litigio Sainz-Ballivian" Creator: Unknown Author Collection: Alfredo Montalvo Bolivian Digital Pamphlets Collection Location: Oruro Publisher: Litografía Victoria Publication Place: Oruro Format: Book
33. Por el progreso de oruro: creación del distrito municipal de Pazña Creator: Unknown Author Collection: Alfredo Montalvo Bolivian Digital Pamphlets Collection Location: Oruro Publisher: Tipo-Litografía La Economica Publication Place: Oruro Format: Book
34. Levantamiento de planos mineros de la República de Blolivia Creator: Unknown Author Collection: Alfredo Montalvo Bolivian Digital Pamphlets Collection Location: Oruro Publisher: Topografía Comericial Publication Place: Oruro Format: Book