This course takes as its starting point the theoretical and conceptual overview of historical linguistics presented in LIN 519 (and similar theoretical introductions to historical linguistics). Building on that foundation, we engage in advanced investigations in the study of language history. Topics taught in this course may include one or more of the following: specific focus on historical phonology, morphology, and/or syntax; application of specific theoretical frameworks to the study of historical language change; examination of quantitative and computational approaches to historical linguistic research; analysis of correlations between historical linguistic data and data from other fields (archeology, anthropology, genetics, etc.).