Brockhaus-1911: Big Horn River · Big Black River · Big Rapids · Blue Mountains · Blue Ridge · Red River · Platte River · Pelly River · Minnesota River · Orange River Colony · Rock River · Swan River · White River · Snake River · Ruperts River · Saint Mary's River · Miami River · Cape Fear River · Clarke's River · Canadian River · Back River · Black River · Croton River · Green River · Humboldt River · Flint River · East River · Fall River
Herder-1854: Blue pills, blue stockings · Red River · Grand River
Lueger-1904: Blue-Mettle · River diggings
Meyers-1905: Big Black River · Big Horn River · Big bugs · Big Horn Mountains · Big Rapids · Blue-Stocking · Blue Island · Blue Anchor-Line · Blue pills · Blue Ridge · Blue John-Mine · Blackley blue · Copper River · Fall River · Clinch River · Connecticut River · Escambĭa River · Detroit River · Coppermine River · English River · East River · Back River · Altemaha River · Batavia River · Bear River · Black River · Canadian River · Cape Fear River · Black Warrior River · Calumet River
Pierer-1857: Big-Black-River · Big-Horn-River · Blue River · Big Elk Creek · Big Beaver · Big Horn · Big-Barren · Big-Cypreß-Rayon · Big · Blue Stockings · Mecklenburg blue · Lower Blue Lick · Blue Hills · Blue Fields · Blue Earth · Blue Ridge · Blue Pills · Blue Mountains