The American Physical Society (APS) is celebrating the 125th anniversary of the Physical Review journals. To commemorate this milestone, the editors present a timeline of select papers and events that are of significance to physics and to the history of the APS (https://journals.aps.org/125years). From Robert Millikan’s famous oil drop experiments to the discovery of gravitational waves, the Physical Review journals have published a wide range of important results, many of which have been recognized with Nobel and other notable prizes. The papers in the timeline are freely available online throughout 2018. If you want to download and read some of those papers, which are the papers you choose?