LAN-Chile Flight 621 crashes in the Andes mountains, killing 21 people, including Argentinian football player Eliseo Mouriño. Date: April 3, 1961 Read more on Wikipedia → 📅 Other events on April 3 📅 Events on this day in 1961 📅 On This Day (Today)

Martin Luther King Jr. delivers his "I've Been to the Mountaintop" speech; he was assassinated the next day. Date: April 3, 1968 Read more on Wikipedia → 📅 Other events on April 3 📅 Events on this day in 1968 📅 On This Day (Today)

Vietnam War: United States Secretary of Defense Melvin Laird announces that the United States will start to "Vietnamize" the war effort. Date: April 3, 1969 Read more on Wikipedia → 📅 Other events on April 3 📅 Events on this day in 1969 📅 On This Day (Today)

Martin Cooper of Motorola makes the first handheld mobile phone call to Joel S. Engel of Bell Labs. Date: April 3, 1973 Read more on Wikipedia → 📅 Other events on April 3 📅 Events on this day in 1973 📅 On This Day (Today)

The 1974 Super Outbreak occurs, the second largest tornado outbreak in recorded history (after the 2011 Super Outbreak). The death toll is 315, with nearly 5,500 injured. Date: April 3, 1974 Read more on Wikipedia → 📅 Other events on April 3 📅 Events on this day in 1974 📅 On This Day (Today)

Bobby Fischer refuses to play in a chess match against Anatoly Karpov, giving Karpov the title of World Champion by default. Date: April 3, 1975 Read more on Wikipedia → 📅 Other events on April 3 📅 Events on this day in 1975 📅 On This Day (Today)

Vietnam War: Operation Babylift, a mass evacuation of children in the closing stages of the war begins. Date: April 3, 1975 Read more on Wikipedia → 📅 Other events on April 3 📅 Events on this day in 1975 📅 On This Day (Today)

US Congress restores a federal trust relationship with the 501 members of the Shivwits, Kanosh, Koosharem, and the Indian Peaks and Cedar City bands of the Paiute people of Utah. Date: April 3, 1980 Read more on Wikipedia → 📅 Other events on April 3 📅 Events on this day in 1980 📅 On This…

The Osborne 1, the first successful portable computer, is unveiled at the West Coast Computer Faire in San Francisco. Date: April 3, 1981 Read more on Wikipedia → 📅 Other events on April 3 📅 Events on this day in 1981 📅 On This Day (Today)

The US Supreme Court upholds the jurisdictional rights of tribal courts under the Indian Child Welfare Act of 1978 in Mississippi Choctaw Band v. Holyfield. Date: April 3, 1989 Read more on Wikipedia → 📅 Other events on April 3 📅 Events on this day in 1989 📅 On This Day (Today)