by Armand J. Thieblot, Jr. and Ronald M. Cowin ; foreword by Herbert R. NorthrupIndustrial Research Unit, Wharton School of Finance and Commerce, University of Pennsylvania : distributed by University of Pensylvania Pressc1972
edited by James Harvey Robinson ; with an English version by Grace Reade RobinsonDepartment of History of the University of Pennsylvania by the University of Pensylvania Press1912 c1899
edited by Herman V. Ames and John Bach McMasterPublished for the Department of History of the University of Pennsylvania by the University of Pensylvania Press[18--]