Upper Mississippi River 9-Foot Navigation Project MPS (NRIS 64500878)

• Lock and Dam No. 13 Historic District (Fulton)
• Lock and Dam No. 15 Historic District (Rock Island)
• Lock and Dam No. 17 Historic District (New Boston)
• Lock and Dam No. 18 Historic District (Gladstone)
• Lock and Dam No. 21 Historic District (Quincy)

National Park Service documentation: https://npgallery.nps.gov/AssetDetail/NRIS/64500878