The Canadian Pacific owned only two 4-8-2 or Mountain type locomotives, Nos. 2900 and 2901. Both were erected by the railroad's Angus Shops in 1914 with most of the same specifications but differing in their heating capacities, hence they were assigned to separate subclasses. They weighed 286,000 pounds and produced 42,918 pounds of tractive effort. With a driver diameter of 70 inches, they had 23½x32-inch cylinders and 200 p.s.i. of boiler pressure. Both had a grate area of 59.6 square feet, but No. 2901 of class H1b had 4180 square feet of evaporative heating surface and 943 square feet of superheating surface. In 1929 the classification was changed to I1a, leaving class H for the CPR's Hudsons. The CPR favored the Pacific type for the service for which these locomotives were intended, and never pursued the development of the Mountain type; it operated 4-6-2s that were heavier than these 4-8-2s. No. 2901 appears here at St. John, New Brunswick on May 19, 1934 in an image by an unspecified lensman that was acquired via eBay. No. 2901 was scrapped in 1944 and No. 2900 the following year.