1948-Clarence Thomas born
1961-Treaty of Antartica
https://www.britannica.com/on-this-day/June-23
On This Day - What Happened Today In History | Britannica
On This Day In History: anniversaries, birthdays, major events, and time capsules. This day's facts in the arts, politics, and sciences.
https://www.britannica.com/on-this-day/June-23Antarctica - The Antarctic Treaty | Britannica
Antarctica - Antarctica - The Antarctic Treaty: With the ending of IGY the threat arose that the moratorium too would end, letting the carefully worked out Antarctic structure collapse into its pre-IGY chaos. In the fall of 1957 the U.S. Department of State reviewed its Antarctic policy and sounded ..
https://www.britannica.com/place/Antarctica/The-Antarctic-Treaty
