I am a historian of early America, with particular interests in the American Revolution and early republic, social reform movements, historical memory, slavery and freedom, nationalism and transnationalism, and colonialism and empire in the 18th and 19th centuries. I have a subsidiary obsession with historical maps. At Reed College, my teaching in the history department extends from the colonial period through Reconstruction. I also teach in the college's first-year interdisciplinary course, Humanities 110. I've published a book on abolitionism and historical memory, and my current research concerns peace activism in the nineteenth-century United States. In 2011-2012, I was an MHS-NEH Long-Term Research Fellow at the Massachusetts Historical Society.