The place of Harvard in the development of econometrics is assessed through the research of its faculty and the development of the courses they taught. Over the course of the century, as the content of econometrics was itself transformed, we find that the Harvard department of economics occupied a singular place in the econometric landscape. This idiosyncrasy was defined by large projects such as the Harvard barometer of the 1920s or the postwar development of input-output analysis, but also by the lack of common purpose that often characterized the work of its members. Through the storied halls of the university passed many of the best and brightest, but few were given the chance to pursue their projects durably, to the detriment of the constitution of a "Harvard econometrics."