Circa 1904-1909 - The gravel car above  is yellow  with  brown/gold detail. Inboard trucks and one brake wheel. The example below is more of a cream/white with brown details.

Litho on this 128 gravel is off-white or gray with black detail. It has inboard trucks and one brake wheel.

Inboard cars with brakewheels are probably later. At least the 1908 catalog showed them with brakewheels and the 1906 catalog didn't

Very unusual car has pre-1910 body with T-Trucks (see similar 127),