In Chapter One, I outline a brief history of the representation of US transiency from the postbellum period into the early twentieth century. I explore how the term ‘tramp’ developed as a term of moral and legal exclusion to describe the mobile poor, who were felt to be opting out of the capitalist work ethos. I show that while the tramp had been a figure of mockery in popular culture, during the late nineteenth century the problem began to be treated more seriously by a range of proto-sociological figures. In the early twentieth century, investigators increasingly accepted a connection between vagrancy and unemployment, and representations became less hyperbolic as a result, although no less tainted by class bias. Finally, the chapter shows how the term ‘hobo’, constructed to mean a transient wage-worker, was developed by the IBWA, the IWW and others to fight back against the cultural meaning and legal implications of the term tramp, creating what I call the ‘frontier defence’ of transiency. However, this defence had problematic connotations and exclusions based on gender and race.