Home›Law Enforcement and Criminal Justice Officials›Era›By Century›20th centuryBrowse By20th century20th centuryComments (0)Reader Challenges (0)20th centuryFilter Results24 entriesGroup TreeAllAmerican Police Chiefs and Police Reformers (6)Art Crime Investigators (1)Corrections Administrators and Directors (2)Criminal Profilers and Behavioral Investigators (5)Federal Bureau Leaders and Agents (5)Police Leaders Outside the United States (5)Nationality (Geography)AllAustralia (2)Netherlands (1)Taiwan (1)United Kingdom (1)United States (10)NationalityAllAmerican (15)Australian (2)British (2)Dutch (1)Taiwanese (1)Institution AffiliatedAllFederal Bureau of Investigation (1)Metropolitan Police Service (1)RoleAllInvestigator (1)Practitioner (3)Show ResultsBrowseCompareSelect all 24Barry Matthews20th centuryCandice DeLong20th centuryEliot Ness20th centuryGeoffrey Dear, Baron Dear20th centuryGerard Veringa20th centuryGregg McCrary20th centuryHou Yu-ih20th centuryHoward Teten20th centuryJack Maple20th centuryJames Fyfe20th centuryJohn Alderson20th centuryJohn E. Douglas20th centuryJoseph Kozenczak20th centuryMelvin Purvis20th centuryMichael Francke20th centuryPatrick V. Murphy20th centuryRalph Gun Hoy Siu20th centuryRay Whitrod20th centuryRobert D. Keppel20th centuryRobert King Wittman20th centuryRobert Ressler20th centuryVanessa Goodwin20th centuryWilliam Bratton20th centuryWilliam H. Parker20th centuryComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.