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Description
Built Juniata Shops, 1919, the last of the western K4s'. This is probably as much of a builder's photo of a Lines West K4s as we're likely to see. The 1919 engines differed in some details from the 1918 engines. Power reverse gear was original equipment. Frames were standard (1918 engines had a Commonwealth steel tail casting). Sand box was behind the bell, as on all Lines East K4s, instead of the reverse order as on the 1918 Lines West group. Center mount electric headlights were used on all L.W. K4s.
Because WWI was on at the time, railroads were run under control of the United States Railroad Administration. The USRA disallowed the decorative striping normally applied to PRR passenger locomotives. After the Pennsy regained control (1921), the striping was added as quickly as possible. But a company consolidation eliminated the "Pennsylvania Lines" lettering in favor of "Pennsylvania". So none of the Lines West K4s' was ever seen in the old P.L. lettering with striping.

Description
Built Juniata Shops, 1919, the last of the western K4s'. This is probably as much of a builder's photo of a Lines West K4s as we're likely to see. The 1919 engines differed in some details from the 1918 engines. Power reverse gear was original equipment. Frames were standard (1918 engines had a Commonwealth steel tail casting). Sand box was behind the bell, as on all Lines East K4s, instead of the reverse order as on the 1918 Lines West group. Center mount electric headlights were used on all L.W. K4s.
Because WWI was on at the time, railroads were run under control of the United States Railroad Administration. The USRA disallowed the decorative striping normally applied to PRR passenger locomotives. After the Pennsy regained control (1921), the striping was added as quickly as possible. But a company consolidation eliminated the "Pennsylvania Lines" lettering in favor of "Pennsylvania". So none of the Lines West K4s' was ever seen in the old P.L. lettering with striping.