Original sentence: Named a National Historic Landmark in 1961, the farm features a stone manor house filled with a collection of 17th-and 18th century period furnishings, a working water-powered grist mill and millpond, an 18th century barn, a slave garden, and a reconstructed tenant farm house
Edited sentence: Named a National Historic Landmark in 1961, the farm features a stone manor house filled with a good collection of 17th-and 18th century period furnishings, a working water-powered grist mill and millpond, an 18th century barn, a slave garden, and a reconstructed tenant farm house