Digital Object Allard Pierson Ex Libris 1934 Ex Libris (bookplate) designed for Allard Pierson on the occasion of his fiftieth birthday. Allard Pierson opened his home Intimis ("for our friends") to Maria Montessori in 1936, enabling her to write The Secret of Childhood.
Digital Object Portrait of John Wight Duff Portrait of John Wight Duff, MA, DLitt painted by Allan Douglass Mainds (1881–1945) for the Newcastle University.
Digital Object Treasure Article 2019 AMI Journal, Archival Treasure Publication 2019 featuring the Closing Lecture from the International Course in Nice, France on 14 September 1934 by Maria Montessori entitled "Les Deux Justices" or "Two Kinds of Justice".
