Grist and Saw Mill (

Freeport Mills was a wholesale and retail dealer of flour, feed, grain, oil meal, baled hay and straw managed by Isaac Horsfall. The original mills were located on what is now Mill Road. In 1894, the location of Freeport Mills was given as Henry Street.

The origin of this mill may date back to 1761, when documents refer to the location as Carl's or Smith's mill. In 1774, Amos Smith sold this mill to Stephen and George Hewlett, Jr. Joseph Swezey became the next owner. Swezey would later sell the mills and pond to Daniel Raynor (1791-1867) in 1829 for $5,500.​ His son, Edward (circa 1821-1892), ran the mill in the 1850s; he was succeeded by Bedell Raynor.

Horsfall purchased the mills in 1874 and, eleven years later, he sold the waterfront site and meadowlands to the City of Brooklyn Water Department. In 1891, the City of Brooklyn advertised an auction of the mill and its machinery. The grist mill was described as a heavily timbered building, part of which was built in 1877.

After selling the mill to the City of Brooklyn, Horsfall moved the business to a new location on Henry Street and switched from water to engine power.

In 1898, the Freeport Mills were purchased by Frans Ruhl.