1836
Working to preserve Ottawa's past
for future generations.
Significant Technological Changes in the City
February 24, 1836
December 25, 1854
June 29, 1891
August 29, 1892
July 30, 1895
May 24, 1900
February 22, 1912
August 23, 1912
May 20, 1920
March 5, 1928
September 25, 1929
June 2, 1953
April 25, 1958
March 16, 1978
October 26, 1983
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