January 7, 1939: The 83rd Anniversary of the Discovery of Francium

The American Physical Society's own 2022 historical notice marking the anniversary of the discovery of francium is a professional society's commemorative record, not a peer reviewed historical study. Its strength is that it comes directly from the physics profession's own society and states the basic discovery facts plainly and accurately. Its limit is that it is a short commemorative notice rather than an in depth historical account, so it is fit for confirming the basic facts of the discovery and not for the fuller history of Marguerite Perey's own work.