Table:
text: Former tallest buildings in Canada by province and territory
Manitoba
Manitoba
Building Height_m_ Floors Built City Architect
Eaton`s Department Store * 46 9 1904 Winnipeg John Woodman
Union Bank Tower 48 10 1904 Winnipeg Darling and Pearson
Lindsay Building 44 11 1911 Winnipeg Woodman and Carey
Confederation Building 46 12 1911 Winnipeg J. Wilson Gray
National Bank Building 50 13 1911 Winnipeg John D. Atchison
Electric Railway Chambers 45 12 1912 Winnipeg Pratt and Ross, Charles S. Frost
Hotel Fort Garry 59 14 1913 Winnipeg Ross and MacFarlane
Marlbourgh Hotel 42 10 1913 Winnipeg J. Chisholm & Son
Paris Building 42 11 1915 Winnipeg Woodman and Carey

Question: How tall is the building designed by architects Ross and Macfarlane among the formerly tallest buildings in Canada after Province and Territory of Manitoba?

Question: Who was the architect who built the pre-1915 Electric Railway Chambers in what was once Canada's tallest building by province and territory of Manitoba?