Harbord Village Residents' Association is a member of the Toronto Historical Association, an umbrella group of Toronto-area heritage groups and historical societies.
Heritage Toronto offers many short histories of various aspects of Toronto's past:
in particular see: http://heritagetoronto.org/the-price-of-prosperity-portuguese-labourers-in-toronto
Harbord Village's own Wendy Smith has put together a fascinating interactive historical map of the founding days of Toronto:
Nathan Ng's wonderful sites of historical maps:
Toronto Historical Map Viewer — several historic Toronto maps georeferenced and overlaid on a grid. Find your home's location and see what was there during several periods in the city's history.
The Toronto Public Library has a wealth of information for researchers. It has links to a wide range of local history resources, both in print and online at http://www.torontopubliclibrary.ca/history-genealogy.
The City of Toronto's Archives are searchable online, and many of its photographs are also available online. Their collection of William James's photographs, referred to as the William James Fond, is particularly interesting for our history as James lived on Major Street and took many pictures of his neighbourhood.
Central Technical Institute has its own website detailing aspects of its history: http://ctsalumni.com/history.php
The church of Trinity Saint Paul's has collected memories of its history at: http://www.trinitystpauls.ca/content/memories
Our neighbour to the south has its own Kensington Market Historical Society, and provides a good outline of its history: http://www.kmhs.ca
Other groups are also working to document the histories of their communities: