In this superb monograph, James Flannery deepens our understanding of efforts to regulate and eliminate child labor in the early twentieth century. Focusing on western Pennsylvania glass houses, the author shows how both manufacturers and glass blowers conspired to find ways around child labor laws and compulsory school attendance. Unlike earlier studies, The Glass House Boys of Pittsburgh is a work of legal history. It deepens and complicates our understanding of the whole anti-child labor movement and of industrial responses. It is a vital addition to the literature on progressive reform efforts.