1789 - US George Washington Inaugurated
http://www.eyewitnesstohistory.com/washingtoninaug.htm
1939 - U.S.A. First Regular Television Service
https://www.tvobscurities.com/2014/04/tv-debuted-at-the-1939-worlds-fair-75-years-ago-today/
1952 - England Diary of Anne Frank
http://news.bbc.co.uk/onthisday/hi/dates/stories/april/30/newsid_3715000/3715435.stm
1789 - US George Washington Inaugurated
http://www.eyewitnesstohistory.com/washingtoninaug.htm
1939 - U.S.A. First Regular Television Service
https://www.tvobscurities.com/2014/04/tv-debuted-at-the-1939-worlds-fair-75-years-ago-today/
1952 - England Diary of Anne Frank
http://news.bbc.co.uk/onthisday/hi/dates/stories/april/30/newsid_3715000/3715435.stm