** Department of Transportation

** Department of Corrections

** Department of Motor Vehicles

** Department of Defense

** Office of Special Investigations ( United States Department of Justice )

** State Office of Civil Rights, U. S. Department of State

** ED Office for Civil Rights, U. S. Department of Education

** HHS Office for Civil Rights, U. S. Department of Health and Human Services

** Department of Arts & Languages

** Department of Theology

** Department of Philosophy

** Department of Earth Sciences

** Department of Physical Geography

** Department of Environmental Sciences and Innovation Studies

** Department of Human Geography and Urban Planning

** Department of Biology

** Department of Chemistry

** Department of Information and Computing Sciences

** Department of Mathematics

** Department of Pharmaceutical Sciences

** Department of Physics and Astronomy

** Energy Research and Development Administration part of Department of Energy.

** The United States Post Office Department ( later renamed the United States Postal Service ) begins the 3rd regular airmail service in the world ( between New York City, Philadelphia and Washington, DC ), the 1st being from Allahabad to Naini Junction in India on the 18th February 1911 and the 2nd being from London to Windsor Castle on the 22nd June 1911.

** A federal judge sentences Los Angeles Police Department officers Stacey Koon and Laurence Powell to 30 months in prison for violating motorist Rodney King's civil rights.

** At Gimbels Department Store in New York City, the first ballpoint pens go on sale at $ 12. 50 each.

** Petroleum spirit ( North American term: gasoline, British term: petrol )

** Petroleum diesel.

** Occidental Petroleum, an oil company which uses the nickname " Oxy " in its logo, originally from its stock's ticker symbol

** Petroleum extraction, the process of recovering petroleum from the ground

** Petroleum Technology and Applied Geophysics ( see also Department of Petroleum Engineering and Applied Geophysics )

** Phillips Petroleum Company, American oil company that merged to become ConocoPhillips in 2002

** Petroleum Engineering

** Petroleum and Gas Engineering ( Engineering )

** Petroleum gas

** Petroleum jelly

** John Davies ( 1916 – 1979 ) British businessman ( British Petroleum ) and cabinet minister

** Reliance Petroleum

** Dome Petroleum

** Petroleum & Natural Resources Division

** Geology with Professional, Petroleum, and Environmental options

** 2nd Prize: Petroleum Jell -

** King Fahd University of Petroleum and Minerals