Built in 1919, by the Eastern Shore Shipbuilding Company of Sharpstown, Maryland as the William M. Mills.

In 1930, the tug was acquired by the McAllister Brothers Towing Company of New York, New York. Where she was renamed as the D.F. McAllister.

In 1948, the tug went out documentation. Her current and or final disposition is unknown.

She was a single screw tug, rated at 650 horsepower.