Richard T. Williams

Excitonic and Photonic Processes in Materials

2014

Soldiers of the American Revol

Soldiers of the American Revolution, Bucks County, Pennsylvania

1987

Soldiers of the American revol

Soldiers of the American revolution, Philadelphia County, Pennsylvania, including Montgomery County

1987

Soldiers of the American revol

Soldiers of the American revolution, Northampton County, Pennsylvania, including Lehigh County

1979

Soldiers of the American Revol

Soldiers of the American Revolution, Philadelphia City, Pennsylvania, including "The Districts"

1976

Soldiers of the American Revol

Soldiers of the American Revolution

1975

Index of wills and administrat

Index of wills and administration records of Delaware County, Pennsylvania, 1789-1850

1974

Index of Berks County, Pennsyl

Index of Berks County, Pennsylvania

1973

Index of wills & administratio

Index of wills & administration records, Philadelphia, Pennsylvania, 1682-1782

1972

Index of wills & estate settle

Index of wills & estate settlements, Montgomery County, Pennsylvania, 1784-1850

1972

Index of Bucks County, Pennsyl

Index of Bucks County, Pennsylvania wills and administration records, 1684 to 1850

1971

Index of wills and administrat

Index of wills and administration records: Northampton County, Pennsylvania, 1752-1850, Lehigh County, Pennsylvania, 1812-1850

1971