January 24 » Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.
February 7 » A Chinese immigrant in San Francisco falls ill to bubonic plague in the first plague epidemic in the continental United States.
February 7 » Second Boer War: British troops fail in their third attempt to lift the Siege of Ladysmith.
April 14 » The Exposition Universelle begins.
September 13 » Filipino insurgents defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of death April 29, 1949
The temperature on April 29, 1949 was between 2.3 °C and 11.2 °C and averaged 8.1 °C. There was 7.9 mm of rain during 11.6 hours. There was 3.7 hours of sunshine (25%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
April 23 » Chinese Civil War: Establishment of the People's Liberation Army Navy.
August 5 » In Ecuador, an earthquake destroys 50 towns and kills more than 6,000.
September 29 » The Communist Party of China writes the Common Programme for the future People's Republic of China.
October 3 » WERD, the first black-owned radio station in the United States, opens in Atlanta.
November 2 » The Dutch–Indonesian Round Table Conference ends with the Netherlands agreeing to transfer sovereignty of the Dutch East Indies to the United States of Indonesia.
November 7 » The first oil was taken in Oil Rocks (Neft Daşları), oldest offshore oil platform.
When copying data from this family tree, please include a reference to the origin: Peter J van Oss, "Van Oss tree", database, Genealogy Online (https://www.genealogieonline.nl/van-oss-tree/I0388.php : accessed January 8, 2026), "Martinus Petrus Hoefnagel (1900-1949)".
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