Canadian cover with minisheet

Maryam sent me this cover with minisheet. The minisheet is dedicated to the 150 years of photography. There are used works of photographers - Thomas Coffin Doane from 1852, Margaret Watkins from 1919 and Geraldine Moodie from 1905. The cover has clear postmark of 4-4-13 from Ottawa and it arrived to Tallinn 14-4-13
Thank you Maryam!