Mark Opsasnick’s incredibly researched book, Rock the Potomac , is chock-full of stories and biographies of the people and groups who...

Mark Opsasnick’s incredibly researched book, Rock the Potomac , is chock-full of stories and biographies of the people and groups who...

Mark Opsasnick’s incredibly researched book, Rock the Potomac, is chock-full of stories and biographies of the people and groups who were...