Brockhaus-1911: Crag · Red River · Old red sandstone
Meyers-1905: Crag · Red skin · Red River of the North · Red River · Red Star-Linie · Red. · Red wood · Red Wharf Bay · Red pine · Red Bank · Old red · New Red Sandstone · Red Cedar · Red Oak · Red Jacket · Red Hill
Pierer-1857: Crag · Red Wing · Red Sulphur Springs · Red-River · Red-Head · Red Cedar River · Little Red River · Red River · Red Lake