Droescher's Mill is located at 347 Lincoln Avenue East in the township of Cranford in Union County, New Jersey, United States.

The mill was added to the National Register of Historic Places on January 8, 1974, for its significance in commerce.

Williams used the flow of the river to turn an undershot water wheel to power his saws.

Droescher used it to run the Cranford Oil Stone Works where whetstones and oilstones were made.

The Cranford Riverwalk and Heritage Corridor portion of the Rahway River Parkway begins at the parklands near where Orange Avenue meets Springfield at the Cranford Canoe Club and follows the Rahway River on its path southbound to the mill.