This note lays out the basic Susceptible-Infected-Recovered (SIR) epidemiological model of contagion, with a target audience of economists who want a framework for understanding the effects of social distancing and containment policies on the evolution of contagion and interactions with the...

Introduction / William J. Collins and Robert A. Margo -- Business organization and internal governance. Revisiting American exceptionalism: democracy and the regulation of corporate governance: the case of nineteenth-century Pennsylvania in comparative context / Naomi R. Lamoreaux -- Corporate...

Were high import tariffs somehow related to the strong U.S. economic growth during the late nineteenth century? This paper examines this frequently mentioned but controversial question and investigates the channels by which tariffs could have promoted growth during this period. The paper shows...