Columbia HeightsRetail Has Cooper Hardware Closed For Good? by Prince Of Petworth January 4, 2009 at 8:37 pm 11 Comments DSCN5584, originally uploaded by Prince of Petworth. A reader sent me word that they thought Cooper Hardware on 14th and Oak may have closed its doors. I went by on Friday and over the weekend and it was closed every time. Anyone know what’s up? Have they closed temporarily or for good?