January 17 » El Yunque National Forest in Puerto Rico becomes part of the United States National Forest System as the Luquillo Forest Reserve.
March 2 » In New York City the Martha Washington Hotel opens, becoming the first hotel exclusively for women.
July 1 » Start of first Tour de France bicycle race.
July 20 » The Ford Motor Company ships its first automobile.
October 31 » The Purdue Wreck, a railroad train collision in Indianapolis, kills 17 people, including 14 players of the Purdue University football team.
November 3 » With the encouragement of the United States, Panama separates from Colombia.
Day of death April 7, 1957
The temperature on April 7, 1957 was between 4.9 °C and 12.7 °C and averaged 8.0 °C. There was 8.2 hours of sunshine (62%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 1 » George Town, Penang, is made a city by a royal charter of Queen Elizabeth II of the United Kingdom.
January 1 » Lèse majesté in Thailand was strengthened to include "insult" and changed to a crime against national security, after Thai criminal code of 1956 went into effect.
April 30 » Supplementary Convention on the Abolition of Slavery entered into force.
May 15 » At Malden Island in the Pacific Ocean, Britain tests its first hydrogen bomb in Operation Grapple.
June 9 » First ascent of Broad Peak by Fritz Wintersteller, Marcus Schmuck, Kurt Diemberger, and Hermann Buhl.
July 25 » The Tunisian King Muhammad VIII al-Amin is replaced by President Habib Bourguiba.
Day of burial April 10, 1957
The temperature on April 10, 1957 was between 4.3 °C and 10.2 °C and averaged 6.8 °C. There was 1.2 hours of sunshine (9%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
When copying data from this family tree, please include a reference to the origin: W. Rovers, "Family tree Ro(o)vers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_rovers/I1970.php : accessed February 7, 2026), "Catharina Maria (Zr. Clotildis) Boelrijk (1903-1957)".
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