The two-and-one-half-story frame, gable-roofed gristmill is one of the best preserved in western Pennsylvania, and especially rare for its continued operation. The present mill's foundation dates from approximately 1770, but what rises above it was built in 1840 by a descendant of Frederick Dubbs, the builder of the earlier mill. The Baldwin family purchased it in 1850, and ran it for 110 years. Originally powered by water from the damming of the south branch of Little Aughwick Creek across the nearby Pennsylvania Turnpike, the water was brought to the site through a thousand-foot millrace. The last Baldwin owner installed a diesel engine as an alternative power source, making the waterpower obsolete. Other than the charcoal roaster for corn, the gristmill machinery dates from the mid-nineteenth century. The current owners have established a campsite nearby, and continue to grind grains for the specialty flours they sell.