Through the prism of litigation practice and tactics, Purcell explores the dynamic relationship between legal and social change. He studies changing litigation patterns in suits between individuals and national corporations over tort claims for personal injuries and contract claims for insurance benefits. Purcell refines the "progressive" claim that the federal courts favored business enterprise during this time, identifying specific manners and times in which the federal courts reached decisions both in favor of and against national corporations. He also identifies 1892-1908 as a critical period in the evolution of the twentieth century federal judicial system.