June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
Day of marriage May 7, 1925
The temperature on May 7, 1925 was between 4.6 °C and 16.0 °C and averaged 11.0 °C. There was 0.8 mm of rain. There was 6.3 hours of sunshine (41%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
In The Netherlands , there was from August 4, 1925 to March 8, 1926 the cabinet Colijn I, with Dr. H. Colijn (ARP) as prime minister.
January 30 » The Government of Turkey expels Patriarch Constantine VI from Istanbul.
February 15 » The 1925 serum run to Nome: The second delivery of serum arrives in Nome, Alaska.
February 28 » The Charlevoix-Kamouraska earthquake strikes northeastern North America.
April 16 » During the Communist St Nedelya Church assault in Sofia, Bulgaria, 150 are killed and 500 are wounded.
May 5 » Scopes Trial: Serving of an arrest warrant on John T. Scopes for teaching evolution in violation of the Butler Act.
May 25 » Scopes Trial: John T. Scopes is indicted for teaching human evolution in Tennessee.
Day of death May 6, 1973
The temperature on May 6, 1973 was between 7.6 °C and 14.4 °C and averaged 11.4 °C. There was 1.4 mm of rain during 0.5 hours. There was 3.2 hours of sunshine (21%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
January 14 » Elvis Presley's concert Aloha from Hawaii is broadcast live via satellite, and sets the record as the most watched broadcast by an individual entertainer in television history.
March 25 » Ireland gets a new newspaper called Sunday World.
May 14 » Skylab, the United States' first space station, is launched.
August 23 » A bank robbery gone wrong in Stockholm, Sweden, turns into a hostage crisis; over the next five days the hostages begin to sympathise with their captors, leading to the term "Stockholm syndrome".
September 11 » A coup in Chile headed by General Augusto Pinochet topples the democratically elected president Salvador Allende. Pinochet exercises dictatorial power until ousted in a referendum in 1988, staying in power until 1990.
November 24 » A national speed limit is imposed on the Autobahn in Germany because of the 1973 oil crisis. The speed limit lasts only four months.
When copying data from this family tree, please include a reference to the origin: Rik Plomp, "Pedigree Plomp", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plomp/I464.php : accessed February 20, 2026), "Arie Bertram (1897-1973)".
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.