January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
March 24 » Mayor of New York City Robert Anderson Van Wyck breaks ground for a new underground "Rapid Transit Railroad" that would link Manhattan and Brooklyn.
April 2 » The United States Congress passes the Foraker Act, giving Puerto Rico limited self-rule.
April 14 » The Exposition Universelle begins.
May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
Day of death February 10, 1971
The temperature on February 10, 1971 was between 0.4 °C and 5.1 °C and averaged 3.7 °C. There was -0.1 hours of sunshine (0%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
May 1 » Amtrak (the National Railroad Passenger Corporation) takes over operation of U.S. passenger rail service.
May 3 » Erich Honecker becomes First Secretary of the Socialist Unity Party of Germany, remaining in power until 1989.
June 7 » The United States Supreme Court overturns the conviction of Paul Cohen for disturbing the peace, setting the precedent that vulgar writing is protected under the First Amendment to the United States Constitution.
August 9 » The Troubles: The British Army in Northern Ireland launches Operation Demetrius. Hundreds of people are arrested and interned, thousands are displaced, and twenty are killed in the violence that followed.
December 5 » Battle of Gazipur: Pakistani forces stand defeated as India cedes Gazipur to Bangladesh.
December 6 » Pakistan severs diplomatic relations with India, initiating the Indo-Pakistani War of 1971.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I105350.php : accessed October 11, 2026), "Hylke "Henry" Tjoelker (1900-1971)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.