Complex sentence: In her history of the house, historian Catherine Snider Long notes that the bricks utilized in its construction were fired in the immediate vicinity along the banks of the South Branch Potomac River and the brick walls were reinforced with hand-wrought structural iron angles.
Split into simpler sentences: In her history of the house, historian Catherine Snider Long notes that the bricks utilized in its construction were fired in the immediate vicinity along the banks of the South Branch Potomac River. Long remarks that the home's brick walls were reinforced with hand-wrought structural iron angles.