| 1960 |
The Organization of Petroleum Exporting Countries (OPEC) is formed to promote the interests of oil exporting countries. |
| 1960 |
With annual revenues exceeding $1 billion, Cities Service is operating in five countries, producing 47 million barrels of crude a day. |
| 1960 |
John F Kennedy elected President of the United States. |
| 1961 |
Berlin Wall built. |
| 1961 |
Cities Service acquires Belgium chemical company ASED. |
| 1962 |
U.S. astronaut John H. Glenn, Jr. becomes the first American to orbit the earth. |
| 1962 |
Cities Service Chairman W. Alton Jones dies in a plane crash. |
| 1962 |
Cities Service builds the butyl rubber plant at Lake Charles. |
| 1963 |
John F. Kennedy assassinated by Lee Harvey Oswald. |
| 1963 |
Cities Services buys Tennessee Copper Company at Copperhill, Tennessee. |
| 1963 |
Cities Services moves some departments from its Bartlesville offices to Tulsa. |
| 1964 |
Cities Service launches the "Eager Beaver" advertising campaign. |
| 1964 |
J. Ed Warren named CEO of Cities Service. |
| 1964 |
The Beatles storm America and appear on "The Ed Sullivan Show." |
| 1965 |
Cities Service research lab begins researching means of producing cleaner burning fuels. |
| 1965 |
U.S. escalates war in Viet Nam. |
| 1965 |
Cities Service unveils its new marketing logo-CITGO. Also introduces CITGO Premium with Titanium and ERO (Extra Range Oil). |
| 1966 |
National Organization for Women (NOW) formed. |
| 1966 |
John L. Burns named Chairman and Chief Executive Officer of Cities Service. |
| 1966 |
The Green Bay Packers, the National Football League champions, beat the American Football League's champions, the Kansas City Chiefs, 35-10 in the first Super Bowl ever. |
| 1967 |
Six employees are killed and 14 injured in a major explosion and fire at the Lake Charles Refinery's Alkylation Unit. |
| 1967 |
First heart transplant. |
| 1968 |
President Lyndon Baines Johnson announces he won't seek re-election; Richard M. Nixon defeats Hubert H. Humphrey for President. |
| 1968 |
By 1968, Cities Service's Natural Gas Liquids (NGL) Company totaled 79 plants and three fractionation facilities. |
| 1968 |
Martin Luther King and Robert F. Kennedy assassinated. |
| 1968 |
Cities Services offshore field produces 100 million barrels of oil; announces move of headquarters personnel to Tulsa. |
| 1969 |
Neil Armstrong becomes the first person to step on the moon. |
| 1969 |
Cities Service bids on several Alaskan oil and gas tracts. |
| 1969 |
Woodstock-"Three Days of Peace and Love" draws hundreds of thousands to a farm in New York. |
| 1969 |
1969-Cities Services continues its environmentally friendly practices with the installation of smokeless flare tip and a contaminant recovery unit |
