Pope John Paul II proclaimed the day as the first-ever World Youth Day.
Source
The US tested the TX-17 thermonuclear bomb for the first time in Bikini Atoll of the Marshall Islands.
Michelle Obama's memoir 'Becoming' surpassed 10 million copies sold after four months of circulation.
The first photo of the moon was taken by John Draper in New York City.
Thomas J Martin patented the fire extinguisher.
The first edition of the Book of Mormon was published in Palmyra, New York.
