Professional Associations

CALI - California Association of Licensed Investigators

The California Association of Licensed Investigators is the largest private investigator association in the world. We believe in the principles of truth, justice, fairness and honesty in dealing with our clients, witnesses and the general public.

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OPIA - Oklahoma Private Investigators Association

The Oklahoma Private Investigators Association was formed in 1984 to increase public and industry awareness, promote the interests and raise the professional standards of the Private Investigation Profession in Oklahoma.

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WAD - World Association of Detectives

The World Association of Detectives was founded in 1925. In 1950, the World Secret Service Association, Inc. was formed as a joint venture by the combined membership of the International Secret Service Association (founded in 1921) and the World Association of Detectives.

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NCISS - National Council of Investigation and Security Services

The National Council of Investigation and Security Services, Inc., is a cooperative effort of those companies and associations responsible for providing private security and investigation services to the legal profession, business community, government and the public.

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TALI - Texas Association of Licensed Investigators

The Council of International Investigators is an established and well respected global association of professional private investigators. Each private investigator or private detective belonging to our organization meets strict membership criteria in line with our aim of maintaining the highest quality professionals within the private investigation business.

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CII - Council of International Investigators

The Council of International Investigators is an established and well respected global association of professional private investigators. Each private investigator or private detective belonging to our organization meets strict membership criteria in line with our aim of maintaining the highest quality professionals within the private investigation business.

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ASIS - American Society for Industrial Security

ASIS International is the preeminent organization for security professionals. Founded in 1955, ASIS is dedicated to increasing the effectiveness and productivity of security professionals by developing educational programs and materials that address broad security interests.

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TCSO - Tulsa County Sheriffs Office

The mission of the Tulsa County Sheriffs Office is to Provide quality law enforcement, custodial and court related services to all persons within Tulsa County and to perform all duties mandated to us by the Constitution of the United States of America and the State of Oklahoma in a professional, ethical and cost efficient manner.

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TPD - Tulsa Police Department

The Tulsa Police Department will apply all knowledge, skills, and available resources by working in partnership with our community to provide quality service, protect life and property, prevent crime, resolve problems so people can live without fear in a safe environment.

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About The Firm

The Wall Street Journal calls him “The Super Sleuth” —and with good reason. For more than 40 years, Tulsa private investigator Gary Glanz has been solving major crimes, locating missing people, recovering tens of millions of dollars in cash and other valuable materials and securing priceless art collections—all with a flair, and a sense of professionalism and discretion that have earned him an international reputation. Originally making a name for himself as one of the youngest detectives in the history of the Tulsa Police Department, where he received numerous awards and citations, Glanz left the police department in 1967 to establish his own private investigative firm. Gary G...

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