George Clarke Simmons

1923

• Geology and iron deposits of the western Serra do Curral, Minas Gerais, Brazil
• Geology and mineral resources of the Barão de Cocais area, Minas Gerais, Brazil
• Grupo Tamanduá da série Rio das Velhas
• Marble Gorge and Grand Canyon
• Mineral resources of the Cougar Lakes-Mount Aix study area, Yakima and Lewis Counties, Washington
• Otter Creek coral bed and its fauna, east-central Kentucky
• The Russell Ranch formation