This category has been further subdivided into three types of disputes: industry wide, corporate-level and plant-level. Boxes 6634 through 6636 contain documents related to industry-wide disputes. These can be defined as labor disputes in which a majority of the firms within a particular industry are engaged in a dispute with a national union which has organized that industry's workers. Two industries are represented in the collection - coal and steel. Of particular significance are the steel disputes of 1952, when President Truman seized the steel industry to prevent a strike; and 1959, when both the companies and the Steelworkers union launched massive advertising campaigns to plead their causes before the nation. All of the materials in this section have been arranged chronologically.

Box 6636 to Box 6640, Folder 9, contain arbitration decisions and related materials pertaining to corporate-level disputes. These types of disputes encompassed entire corporations, including all plants. As an arbitrator, Dr. Killingsworth heard many of the disputes in this category. They are arranged alphabetically, by the name of the company.

Most of the Labor Disputes material is composed of arbitration cases involving plant-level grievances. These are also arranged alphabetically by name of company and then by name of plant. Box 6640, Folder 10 to Box 6656, Folder 36, contains these materials. (The researcher should note that many of the individual arbitration proceedings are incomplete. Some lack the decision, while others are missing exhibits or awards). Dr. Killingsworth, as umpire or arbitrator for the Bethlehem Steel, U.S. Rubber, Ford Motor, Goodyear and Youngstown Sheet and Tube Companies, heard many of the grievances contained in this portion of the collection.