In 1929 the Canadian Pacific took delivery of ten class H1a Hudson (4-6-4) type locomotives from Montreal Locomotive Works. With 75-inch drivers, these engines weighed 355,000 pounds and developed a tractive effort of 45,300 pounds. They had 22x30-inch cylinders and carried 275 p.s.i. of boiler pressure. This first class of CPR Hudsons was so successful that 55 engines from the same builder followed, having virtually identical dimensions except for the "Royal Hudsons" which differed principally in their stream-styled appearance. Shown here at CPR's Toronto terminal is No. 2806, a member of class H1a, in an image courtesy of Tom Rock of Rock on Trains. There is no information about the photographer, nor of the date when this view was snapped.