The University Map Library (UML) at the University of Waterloo developed an online collection of digitized and georeferenced aerial photography of the Kitchener-Waterloo area from the 1930s and 1940s. Using GIS technology, the air photos were digitized with geographical coordinate tags for use in GIS software programs including online mapping applications such as Google Earth (GE). By creating and offering downloadable georeferenced images compatible with popular mapping tools, the air photos have gained significant popularity and utilization by not only regular library users but by community groups, organizations and corporations who have never used library resources before. The integration of modern technology with traditional paper mapping has proven to be both a method of preservation and a means of increasing and varying utilization of the collection.