This is the first major study of post-Civil War banking panics in almost a century. The author has constructed for the first time estimates of bank closures and their incidence in each of the five separate banking disturbances. The author also reevaluates the role of the New York Clearing House in forestalling several panics and explains why it failed to do so in 1893 and 1907, concluding that structural defects of the National Banking Act were not the primary cause of the panics.