January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
January 22 » Columbia Phonograph is formed in Washington, D.C.
May 6 » The Eiffel Tower is officially opened to the public at the Universal Exposition in Paris.
September 28 » The General Conference on Weights and Measures (CGPM) defines the length of a meter.
November 8 » Montana is admitted as the 41st U.S. state.
November 11 » The State of Washington is admitted as the 42nd state of the United States.
Day of death July 12, 1935
The temperature on July 12, 1935 was between 14.0 °C and 26.7 °C and averaged 20.9 °C. There was 13.8 hours of sunshine (84%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
When copying data from this family tree, please include a reference to the origin: J. Post, "Descendants Grootenboer", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-grootenboer/I34280.php : accessed March 3, 2026), "Pieter den Hollander (± 1869-1935)".
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