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is used here to identify the first firm in an industry to adopt the M Form structure. 。 Application of two nonparametric statistical tests—the Sign Test and the Wilcoxon Matched Pairs Signed Ranks Test — is supportive of the hypothesis that the M Form structure is associated with superior firm. I wish to thank Kirk Monieverde for extremely helpful ments and assistance. The development of the anizational histories would not have been possible without the diligent assistance of Ken Dunmore and the institutional support of the Center for the Study of Organizational Innovation. University of Pennsylvania, and its director. Oliver Williamson. I am also indebted to Richard Caves. Jeffrey Pfeffer, Lynn Phillips. James R. Miller. Garth Saloner. Oliver Williamson and an anonymous referee for many useful ments. 39。innovator39。s innovations, the use of anization to acplish his ends is among both his greatest and earliest Oliver Williamson has further championed the study of anizational innovation, doing much to provide the theoretical underpinnings necessary to bring the topic into the corpus of economic theory. Furthermore, Richar