On Sept. 19, 1796, President George Washington’s farewell address was published. In it, he advised, “Observe good faith and justice toward all nations. Cultivate peace and harmony with all.”

In 1970, “The Mary Tyler Moore” show debuted on CBS-TV.

In 1982, the smiley emoticon was invented by Carnegie Mellon University professor Scott E. Fahlman, who suggested punctuating humorously intended computer messages. :-)

In 1986, federal health officials announced the experimental drug AZT would be available to thousands of AIDS patients.

In 1995, The New York Times and The Washington Post published the manifesto of Unabomber Ted Kaczynski, which proved instrumental in identifying him.

In 1996, IBM announced it would extend benefits to partners of gay employees.