This chapter examines the records of performance that document cultural change in Ireland during the 1950s and within Irish theatre more broadly. During this period, new theatre ventures, such as the Globe Theatre, the Pike Theatre and other productions by the then relocated Abbey company, responded to increasing international cultural influence and, in particular, American and Irish-American influence. Figures such as Siobhán McKenna, the Belfast-born actor and associated with the role of Saint Joan in George Bernard Shaw’s play, also greatly contributed to not just the internationalisation of Irish theatre, but the export of an authentically Irish cultural brand. Actor Genevieve Lyons was a founding member of Dublin’s Globe Theatre Company in 1954. In starring in a number of key roles, such as Sally Bowles in I Am a Camera (1956), Lyons and the Globe Theatre brought new globalising influences in programmes and acting to Dublin audiences. These works and events sought to rejuvenate the image of Irish drama and its depiction of its broadening cultural and international influences. Similarly, by examining play materials within the Abbey Theatre Digital Archive, the Pike Theatre archive and other papers from the period, it is possible to identify a dependence on American popular culture as a primary medium through which national consciousness and identity was expressed at a time concurrent to how modern Ireland was being redeveloped.