March 2 » United States Steel Corporation is founded as a result of a merger between Carnegie Steel Company and Federal Steel Company which became the first corporation in the world with a market capital over $1 billion.
April 25 » New York becomes the first U.S. state to require automobile license plates.
May 3 » The Great Fire of 1901 begins in Jacksonville, Florida.
June 17 » The College Board introduces its first standardized test, the forerunner to the SAT.
August 6 » Kiowa land in Oklahoma is opened for white settlement, effectively dissolving the contiguous reservation.
Day of death May 15, 1991
The temperature on May 15, 1991 was between 4.6 °C and 10.7 °C and averaged 7.6 °C. There was 2.5 mm of rain during 4.1 hours. There was 1.8 hours of sunshine (11%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
March 23 » The Revolutionary United Front, with support from the special forces of Charles Taylor's National Patriotic Front of Liberia, invades Sierra Leone in an attempt to overthrow Joseph Saidu Momoh, sparking the 11-year Sierra Leone Civil War.
April 4 » Senator John Heinz of Pennsylvania and six others are killed when a helicopter collides with their airplane over an elementary school in Merion, Pennsylvania.
July 11 » Nigeria Airways Flight 2120 crashes in Jeddah, Saudi Arabia killing all 261 passengers and crew on board.
July 31 » The United States and Soviet Union both sign the START I Strategic Arms Reduction Treaty, the first to reduce (with verification) both countries' stockpiles.
October 5 » An Indonesian Air Force C-130 crash kills 135 people.
October 17 » 1991 Rudrapur bombings by Sikh separatists, who exploded two bombs, during a Ramlila Hindu celebration in Rudrapur, Uttarakhand, killing 41 people.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I21134.php : accessed January 18, 2026), "Maria Cornelia du Preez (1901-1991)".
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