If the genealogist would identify the perfect county history--one containing equal parts of history and biography, and enough genealogy to make the blood race--Williams' "History of Frederick County, Maryland" would surely be his/her choice. The history of Braddock's campaign, the local events of the Revolution, John Brown's raid nearby, the old National Road, the earliest American railroad and its opening to Frederick, and the great events of the Civil War are all covered in the first volume of this monumental work. Of particular interest to the genealogist are the 1790 census of Frederick County and the roster of Maryland Troops in the French and Indian War.