Company Photographer

E J Hart, The Selling of Canada, Altitude Publishing, 1986

William Notman was a Scottish Canadian photographer who was active during the later 19th century. He set up his business on Bleury St in Montreal. According to Wikipedia he was the first Canadian photographer to gain international acclaim.
 His photography for Canadian Pacific during the construction of the transcontinental railway was valued enough that a train car was assigned to him and converted to a photography studio and darkroom for his use. 
The main body of his work- photographs, negatives, books etc. are now part of the McCord Museum of Canadian History in Montreal,