The first critical edition of the writings of the prolific radical workers' newspaper columnist and musician who rode the rails during the Great Depression The Popular Wobbly brings together a wide selection of writings by T-Bone Slim, the most popular and talented writer belonging to the Industrial Workers of the World (IWW). Slim wrote humorous, polemical pieces, engaging with topics like labor and class injustice, which were mostly published in IWW publications from 1920 until his death in 1942. Although relatively little is known about Slim, editors Owen Clayton and Iain McIntyre coalesce the latest research on this enigmatic character to create a vivid portrait that adds valuable context for the array of writings assembled here. Known as "the laureate of the logging camps," Slim also composed numerous songs that have been performed and recorded by Pete Seeger, Utah Phillips, and Candie Carawan, who in 1960 updated Slim's song "The Popular Wobbly" with Civil Rights-era lyrics. Slim's witticisms, sayings, and exhortations ("Wherever you find injustice, the proper form of politeness is attack"; "Only the poor break laws-the rich evade them") were widely discussed among fellow hobos across the "jungle" campfires that dotted the railways, and some even transcribed his commentary on boxcars that traveled the country. Yet despite Slim's importance and fame during his lifetime, his work disappeared from public view almost immediately after his death. The Popular Wobbly is the first critical edition of Slim's work and also a significant contribution to literature about working-class writers, the radical labor movement, and the history and culture of nomadism and precarity. With this publication, Slim's rediscovered writings can once again inspire artists and activists to march and agitate for a more just and equitable world.