I have a book i picked up recently. It is entitled simply, "El Nino" by Maria Montessori. It is in fair condition. It is written in Spanish. It sates on the cover "Version de J. Roldolfo Lozado", Prologo de Dionosa Zamora". Also "Ciudad de Mexico MCMLVI, Secretaria De Educaion Pulba". So roughly it was commissioned in the country of Mexico in 1956 for or by the Secretary of Public Education.