BAUER, BLANC, P. CURIE et al., Les Idées Modernes sur la Constitution de la Mati

First edition.
This volume, published by the French Physical Society, collects lectures given in 1912 by scientific luminaries of the time, including Marie Curie (Nobel laureate), Henri Poincaré (universal mathematician and physicist), Jean Perrin (future Nobel laureate), and Paul Langevin.
The lectures present cutting-edge theories on the atom, electrons, radioactivity, and the properties of matter, at a pivotal moment before the full advent of quantum mechanics.