The 1:2,500 Historical Topographic Maps is a digital collection of scanned and vectorized hardcopy maps (Mylar format) of the Ottawa/Gatineau region. The range of years of the maps are from 1966 to 1980. The hardcopy maps were sent out to be scanned in the summer of 2007. The hardcopy maps are currently archived at the Carleton University Library storage facility.
The online maps are available in TIFF, MrSID, PDF and AutoCAD formats.
Please visit Carleton Library's GIS page for more datasets related to Ottawa https://library.carleton.ca/find/gis/geospatial-data