Mr. Wardlaw, of New York, and a “M. E.” Exhibition Championship Cup Holder, has a similar locomotive which, I believe, is destined for exhibition in some museum in U. S. A. [Illustration: Figure 71.—Operable model of a British locomotive of about 1905.] British Locomotive, 1905 An operable model (figure 72) of locomotive _No. 146_ of the Ferrocarril Oeste of Argentina was presented to the Museum (USNM 310585) in 1933 by Frank A. Wardlaw and Frank A. Wardlaw, Jr. The 22-inch-long model has a gauge of 2½ inches. Gasoline carried in the tender is used as fuel. The builder is not known. [Illustration: Figure 72.—Operable model of a British locomotive, 1905.] The original locomotive _No. 146_, a 4-4-4-T type with a cowcatcher and outside cylinders, was built in 1905 by Beyer, Peacock & Co., Ltd., of Manchester, England. The locomotive and tender have a common frame. According to a small plate affixed to the model, the original was the first locomotive to be fitted with “Wardlaw’s composite clackvalve.” This invention of the elder Wardlaw was installed at Buenos Aires in January 1908, according to the legend on the plate. The original _Greyhound_ was locomotive _No. 302_ of the London and North-Western Railway Co., built in 1905 at the Crewe works of the company. Of the 4-4-0 type, the locomotive had inside cylinders and was the first in Europe to be fitted with “Wardlaw’s composite clackvalve.” This was done in August 1910. The model of the locomotive and its 6-wheeled tender (figure 73) is 29 inches long and has a gauge of 2½ inches. It is operable, using gasoline carried in the tender as fuel. The builder is not known. The donors, Frank A. Wardlaw and Frank A. Wardlaw, Jr., presented the model (USNM 310586) to the Museum in 1933. [Illustration: Figure 73.—Operable model of British locomotive _Greyhound_, 1905.] Pennsylvania Atlantic-Type Locomotive, 1907 The Atlantic-type steam locomotive is represented in the Museum collection by a nonoperable model (figure 74) lent to the Museum in 1922 by E. Howard Askew of Baltimore, Md. Constructed by the lender, the model (USNM 307949) is 32 inches long and has a gauge of 2½ inches. It represents the Pennsylvania Railroad class E3sd _No. 5127_, a 4-4-2 steam locomotive with Walschaert valve gear. The original locomotive was built at the railroad’s Juniata shops, Altoona, Pa., in August 1907, construction No. 1734. Originally a class E3d locomotive, it was converted to an E3sd in June 1913 by the addition of a superheater in the Wilmington, Del., shops of the road. [Illustration: Figure 74.—Model of Pennsylvania Atlantic-type locomotive, 1907.]