City directories are often overlooked by genealogical researchers, but they can provide a great deal of information. Typically, a directory entry contains much more than just a name and address. The entries often include an occupation, maybe even a place of employment, sometimes the name of a spouse. In the case of entries for women heads of household, it may include an indication that she is a widow and sometimes even the name of her deceased spouse. Directories exist for a great many communities.
In the Prairie Provinces the directories for many towns and cities were collected by Bruce Peel and made available on microfiche in the collection "Peel's Prairie Provinces." The Calgary Public Library has this collection in the Community Heritage and Family History Room. The directories in the collection cover towns like Medicine Hat, Regina, Swift Current, Saskatoon as well as many others. In the Community Heritage and Family History room we also have paper copies of the city directories for Calgary.
Recently, however, the University of Alberta has launched the Peel's Prairie Provinces collection online including some of the directories. Directories for Edmonton, Calgary, Lethbridge and Winnipeg, to name just a few, can be searched at http://peel.library.ualberta.ca/henderson.html. The directories are searchable, which means you can search across the whole collection, and a new feature, "Flipbook" has been added so that you can navigate through the book. Check out the icon on the top right corner of the page.
Beyond the directories, the Peel collection includes a wide variety of information, some of it quite hard to find elsewhere, relating to the history of the prairies. It has been a very valuable collection to historians, providing access to documents that were previously inaccessible. Now, with the launch of the online version, this great collection is available to everyone. Have a look. It is a real treasure trove.