The press release says that -
The concept of Canadian tourism emerged during the early nineteenth century. Improved modes of transportation, such as new railways stretching across the country, facilitated leisure travel and offered people the chance to witness some of the nation’s greatest marvels and modern achievements.
'Photographs were the ideal medium with which to attract potential visitors, and photographers were hired by transportation companies to produce images of majestic scenery that would promote destinations. Later rivaled by amateur picture-takers, eager to create their personal holiday mementos, these photographs were a vital component of the burgeoning tourist industry. The imagery created during this period helped to characterize the country, establishing a sense of national identity by introducing viewers to iconic images of Canadian scenery'.
The website is at https://www.flickr.com/photos/lac-bac/sets/72157650719659971/
And for people who will travel to Ottawa in the coming months, visit the National Gallery of Canada to see the photos exhibit from March 6 to August 30, 2015.