[Illustration: Officers of the American Protective League, an organization of 250,000 patriotic American business men who coöperate effectively with the Department of Justice in its operations against spies, slackers, and seditionists. Above, Mr. A. M. Briggs, founder; left, Capt. Daniel Frey, and right, Mr. Victor Elting, National Directors] The League’s rule in assigning cases, indeed, is to choose as investigator the man whose social, professional, or business connections are such that he can “clean up” with the least effort and in the shortest space of time. When there are many places to visit, the case goes to a man owning a motor car. If it is complex in character, with lines extending into various industries, clubs, trades, and so on, the work may be divided and several members assigned to it. The main idea is to get the work done, and done quickly--the secondary purpose to make it as easy as may be for the members. League members knew little about methods of investigation. But they had that priceless gift, intelligence, and they learned by doing. There was such a mass of complaints, tips, and wild guesses concerning enemy activities waiting to be handled, that no extensive schooling could be attempted. The cleverest government operatives available and experienced city and private detectives talked to groups of captains and lieutenants, and these passed along the information to their men. A. Bruce Bielaski, Chief of the Bureau of Investigation, Department of Justice, was quick to recognize the possibilities of the League. Everywhere his organization gave invaluable aid and coöperation in training League members. Able lawyers made brief but comprehensive digests of the laws involved and the rules of evidence to be observed. Methods of work and problems of authority and conduct were explained at length in a handbook. Supplementing the handbook and the law digest, bulletins were published at intervals to suggest better methods, to report fresh evidence of German plans and propaganda, or to sum up and interpret the new laws which Congress was enacting for the punishment of espionage and sedition. Close touch was kept at every step with the Department of Justice. Forms for reports and records were adopted, conforming to the system in use by the Department. Carbons of all reports and records were made for the files of the Bureau of Investigation. Eventually a complete record of each case found its way to the master file in Washington. In this way duplication of effort was avoided, complete coöperation assured, and the exact status of any inquiry could be learned in a moment by any one needing the information. Far from running wild in its enthusiasm to corral all enemy agents, the League tried to give every alien it investigated an American square deal. Perhaps the finest paragraph in the handbook is this one urging the right of aliens to considerate treatment until their unfriendly attitude is revealed: