This is the site where Blagden and Argyle mills once stood, two of the twenty-six mills that once flourished along Rock Creek. If you look close, you can still see part of the millrace and the mill road. The exact date of the construction of these mills is unknown, but the mills were in operation during the early 1800's. Stones used in the construction of the mill were quarried on the east bank of the Rock Creek Valley across from the mill. Thomas Blagden, a prominent Washington businessman owned the mills from the 1820's until 1889. Blagden's Mill, a 2 1/2 story structure, contained three millstones for grinding wheat, rye, and corn. Argyle, a smaller mill, ground animal bones for the production of fertilizer. The mills ceased operation in 1889. The millseat was forty-seven miles across and on it were located the mansion of Thomas Blagden, a smaller house for the miller, icehouse, barn, carriage house, and other assorted structures.