Material Classification Recommended by the Railway Storekeepers' Association

"Material Classification", authored by the Railway Storekeepers' Association, is a guide created for the United States Railroad Administration to standardize the organization of railway materials during and after World War I. The original document categorizes materials for maintenance, equipment, and railroads across the country for those who worked in finance, purchasing, and inventory, and stresses the importance of organizing these materials for effective management. With a starting note from the Director General of Railroads, this guide lays out a systematic approach to classify everything from basic supplies to the essential parts of locomotives, making sure the railroads run smoothly.