COMPILED AND PUBLISHED ANNUALLY AS A REFERENCE TOOL BY THE NATIONAL POLICE CHIEFS AND SHERIFFS INFORMATION BUREAU, THE DIRECTORY FIRST LISTS ITS INFORMATION BY STATE AND THEN BY COUNTY, WHERE RELEVANT, WITHIN SEVERAL CATEGORIES. THE CATEGORIES ARE INDICATED BY COLORED BORDERS FOR EASY LOCATION OF SECTIONS AND INCLUDE (1) COUNTY SHERIFFS, COUNTY PROSECUTORS, AND REGIONAL PROSECUTORS; (2) POLICE CHIEFS OF CITIES AND TOWNS WITH MORE THAN 3,500 INHABITANTS AND COUNTY POLICE CHIEFS; (3) STATE POLICE TRAFFIC PATROLS, CRIMINAL INVESTIGATION AGENCIES, CORRECTIONAL INSTITUTIONS, GOVERNORS, ATTORNEYS GENERAL, AND SECRETARIES OF STATE; AND (4) FEDERAL CRIMINAL INVESTIGATION AGENCIES (E.G., THE BUREAU OF ALCOHOL, TOBACCO AND FIREARMS; BUREAU OF CORRECTIONAL INSTITUTIONS; THE DRUG ENFORCEMENT ADMINISTRATION; THE INTERNAL REVENUE SERVICE; AND THE FBI, FEDERAL PENAL INSTITUTIONS, AND FEDERAL CORRECTIONAL INSTITUTIONS. (DAG)