OnThisDay: July 24
1824 - Harrisburg Pennsylvanian newspaper publishes results of the first public opinion poll.
1918 - On Mt. Scopus in Jerusalem, the cornerstone for Hebrew University was laid by Dr.Chaim Weizmann. Dr. Wiezmann would go on to become the first elected President of the newly formed Isreal (1948).
1925 - Teacher John Scopes found guilty of teaching evolution in a Tennessee high school. He was fined $100 & court costs.
1969 - The Apollo 11 astronauts, two of whom had been the first men to set foot on the moon, splashed down safely in the Pacific Ocean.
1987 - IBM-PC DOS Version 3.3 (updated) released. [This is not Microsoft's DOS.]
1990 - Iraq massed tens of thousands of troops and hundreds of tanks along its border with Kuwait.