A short video about the early history of photography created for a Chemical Photography exhibition held in September 2010 at the Ryerson University Library & Archives, Special Collections. Contributed by Ryerson student, Olena Vivcharyuk, and the Library & Archives Curatorial Specialist Beth Knazook. Archives & Special Collections: http://www.ryerson.ca/archives/ Archives & Special Collections Exhibits: http://www.ryerson.ca/archives/exhibits.html Brought…