Crosley–Garrett Mill Workers' Housing, Store, and Mill Site

The Crosley–Garrett Mill Workers' Housing, Store, and Mill Site, also known as Paper Mill House and the William Crosley Store and Mill Workers' House, is a historic mill-related complex located on Darby Creek in Newtown Township, Delaware County, Pennsylvania. The complex consists of a four-family stone Workers' Housing unit (1828), with an attached store (1845), and the archaeological remains of William Crosley's Woolen Mill (1828-1861) and Casper S. Garrett's Union Paper Mill (1869-1889).

The buildings house the Paper Mill House Museum and headquarters of the Newtown Square Historical Society.

It was added to the National Register of Historic Places in 2003.