PO Box 523, Station B, Ottawa, ON, K1P 5P6
Slide 1 - With Welcome Message - Bottom

Lady and Lord Aberdeen with the National Council of Women at Rideau Hall, shortly before their return to the United Kingdom, October 1898, Topley Studios/Library and Archives Canada, PA-029033

Truss Bridge over the Chaudière Falls, Ottawa River, watercolour by John Burrows, 1828, Library and Archives Canada, I.D. No. 2833217.

Timber raft on the Ottawa River, date unknown, John William Woolsey and family fonds, Library and Archives Canada, I.D. No. 319157.


The Historical Society of Ottawa (HSO) is Ottawa’s oldest historical organization.The principal aim of the Society is to increase public knowledge of the history of Ottawa and the surrounding region through meetings, tours, awards, publications, and sponsored research.

HSO Articles

  • The History of Ottawa According to Phil Jenkins

    15 March 2023 HSO News
    The Historical Society of Ottawa, in partnership with the Ottawa Public Library and Rogers TV, is presenting a three-part lecture series, featuring renowned author, columnist, singer songwriter Phil Jenkins, which will take place at the Ottawa Public Library's Sunnyside Branch, on three consecutive Saturdays — April 15, 22 & 29, 2023…
  • HSO Continues Partnership with Black History Ottawa

    28 February 2023 HSO News
    In 1793, a young Black woman named Choe Clooey, against her loud protests, was forced into a boat and across the Niagara River to be sold in the United States. Several witnesses, horrified by Cooley’s plaintive cries for help, resolved to petition the Executive Council of Upper Canada for her…
  • Heritage Day 2023

    22 February 2023 HSO News
    In celebration of our 125th anniversary, the Historical Society of Ottawa was recognized and honoured by being invited to contribute this year’s special Heritage Day “2023 Great Ottawa History Challenge”. How well do you know Ottawa history? Take the challenge! https://ottawacitizen.com/news/heritage-day-try-the-2023-great-ottawa-history-challenge
  • Double Feature: Prime Ministers’ Residences & Street Art

    11 February 2023 Speakers Presentations
    Our in-person speaker session of February 8, 2023, hosted by the Main Branch of the Ottawa Public Library, featured two speakers – double the pleasure, double the fun! One of our speakers related fascinating stories of places, many of which we can no longer see, while the other encouraged us…

Upcoming Events

Mar 29 2023
7:00PM - Online via Zoom

Bytown 1847

Michael McBane

Apr 12 2023
1:00PM - Ottawa Public Library, Main Branch Auditorium

Before Bytown: Uncovering our region's ancient past

Jean-Luc Pilon

Apr 26 2023
7:00PM - Online via Zoom

The Role of Art & Artists in Ottawa's History

Jim Burant

Ottawa Stories

Ottawa has an interesting and varied history.
Enjoy stories from this month in history or discover other Ottawa stories.

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