Between 1911 and 1927 there were 49 cars built coded AW. The number group was 1 - 40, 60 - 68. These were replacement cars for swing door stock being converted for suburban electric service.
Cars 1 - 35 were clerestory roof style. Cars 36 - 40 were arch roof style. Cars 60 - 68 were longer cars with arched roof construction.
One of the features of cars of this era construction was the 'Divided' window. This style window developed from travelling salesmans who complained about the open windows sending gusts of wind into the compartments. To overcome this problem, the railways developed the 'divided' window which allowed the upper portion of the window to open for ventilation without inducing wind gusts. Maintenance was a problem and by the late 1940's travelling salesmen had abandoned rail for the motor car. The upper portions of the windows were fixed shut.