Some of These Days is a deft and engrossing double helix: a cultural history of international modernism through interwoven chapters on its two greatest African American stars, Josephine Baker and Paul Robeson. Tracing their unparalleled impact across a variety of fields, from the stage to the screen, in architecture as well as politics, Donald demonstrates that Baker and Robeson - with their outsized charisma, their artistic daring, and their peripatetic restlessness - were the 'barometers' of the new age.