Online image databases
Metropolitan Design Center Image Bank, University of Minnesota
An online imagebank of 17000+ images mainly of the built and natural landscapes of the Twin Cities metropolitan region in Minnesota, dating from the early 1990s through the present; includes both low-level oblique aerial photographs and eye-level images.
McCord Museum: Notman Photographic Archives
Over 1.2 million photographs including landscapes, well-known people, families, places, events, activities, providing a visual history of Montreal, Québec, and Canada from the 1840s to the present.
Society of Architectural Historians : Architecture Resources Archive (SAHARA)
More than 47000 images of architecture and landscapes contributed by SAH members (membership required for access).
Maps, airphotos, and image databases
Atlas of Canada (Natural Resources Canada)
Canadian Air Photo Collection - Waite Aerial Photography
An excellent resource for oblique air photos of major and mid-sized urban centres
David Rumsey Map Collection
Deutscher Stadtplandienst - City maps (in German)
Discovering Montreal (Ville de Montréal)
Online thematic maps and borough maps in PDF format
Measure areas using Google Maps
Green Map System
'A locally directed, globally connected public relations service for community sustainability'
The Interactive Nolli Map Website
Library of Congress online map library
Hi-res orthophoto and multi-layer digital map of the Island of Montreal
NTS Canada online map index
Ontario online maps and other resources (Ontario Ministry of the Environment)
Topographic maps of Canada (Natural Resources Canada)