Cloth-covered holograph notebook containing notes of experiments, etc. on radioactive substances, with rough pen-drawings of apparatus, dated from 27 May 1899 to 4 December 1902. [Paris]. A small label inscribed 'M. Curie 1900' is pasted on the upper cover. Inserted is a visiting card 'Madame P. Curie Professeur ̉la Facult ̌des Sciences,' with a two-line inscription acknowledging the receipt of a book from Dr. de Fleury [Paul Louis douard Maurice de Fleury, 1860-1931], and five sheets (v.s.) of work-notes, one dated 1902.