1. Archives M. Curie at the Institut Curie, Paris. Pierre and Marie Curie Papers, Bibliothèque Nationale, Paris:
2. AC, 3146. Frédéric Haudepin to Marie Curie, 3 February 1922.
3. AC, 433. Chamié, Catherine (1935). Unpublished 5-page reminiscence A la mémoire de Madame P. Curie.
4. AC, Correspondence with the company Sel de Radium, 1920–1929.
5. AC, 3142. Note by Curie on visit to the factory, 29 April 1925.