In order to save his time, each operative was taught how to use the regular city channels of information. If he got a name without any address, he was taught to go to the nearest telephone directory or city directory. Sometimes a telephone number was known and the name of the party unknown. Reference to the numerical telephone directory sometimes covered this. Sometimes the business of the subject might be known and his address unknown, in which case it might be found by reference to the classified business telephone directory, or the city directory. A subject might be doing business in the city and living in the suburbs. Countless suburban telephone directories were always in the central office for such reference. In every great city a directory gives a concise arrangement of the personnel of the various departments of the U. S. Government; state and federal officials, their titles, their room numbers, their buildings, can be found in this way. In this way, also, all the officers of the city government can be found; the rooms where the court of this or that judge are located, etc. The state offices, including hospitals, etc., can be found in these directories. A wide range of useful information concerning the city and its environs was given to novitiate operatives in this Central District. This information was of incalculable benefit to new members of the League when once their active investigating work began. The A. P. L. training school was a very important cog in the Chicago machine, and made it possible for the district to do more work per capita and better work than would otherwise have been possible. Indeed, the training for an operative was not bad training for a newspaper reporter. What is said regarding this work in the Chicago district might apply in very considerable part also to the work in other large communities. Operatives were obliged to take all sorts of roles. At times they acted as waiters or clerks, and sometimes they impersonated lawbreakers themselves. One of them succeeded in impersonating an I. W. W. so well that at a meeting he was covering he was asked to contribute to the I. W. W. cause—and did so! Another ingratiated himself into the good offices of the I. W. W.’s so well that he was permitted to take notes at one of their meetings with the understanding that he was a newspaper man representing one of their own papers. The Southwest Division in Chicago is only another corner of darkest Europe. In this section, however, were located a good many foreign-born operatives, who affiliated well in that region and did their work thoroughly until the closing days of the war. Their grist included some curious and interesting cases.