A plaque was dedicated Tuesday in memory of Jack T. and Marg Bohman Howard, who bequeathed about $550,000 to improve Black Rock Golf Course.
The plaque is on a wall outside the golf course's clubhouse.
The Howards formerly owned Howard's Arts and Frames and Howard's Paint and Wallpaper in Hagerstown.
Their estate donated the money in 1995. Over the years, it grew to $600,000.
The fund was used to buy 65 acres at the golf course in 1998.
"We may decide to add nine more holes some day," Roger Finn, the chairman of the Black Rock board of directors, said Tuesday.
The fund is paying for tee improvements this year.
The public 18-hole golf course runs next to Mount Aetna Road, just outside Hagerstown
"This is one of our gems of our county," Gregory I. Snook, president of the Washington County Commissioners, said during a short ceremony at the golf course. "We're very proud of it."