Accounting carries with its history a vast number of ideas which have slowly developed along with it. This volume relates this history as it took place during the first three decades of the twentieth century in the United States. In particular it deals with those individuals who were for the most part responsible for it. It was these pioneers who recorded their observations of the actual workings of the myriad adaptations and new devices which had slowly eased their way into accounting theory and practice in the USA in the early twentieth century.