James St. John:
Erosion control blocks of Sioux Quartzite (Paleoproterozoic, 1.65-1.70 Ga; Interstate 90 at the Missouri River, Oacoma, South Dakota, USA)
James St. John:
Missouri River (southeast of Rocheport, Missouri, USA)
James St. John:
Missouri River (near Helena, Montana, USA) 1
James St. John:
Missouri River (near Helena, Montana, USA) 2
James St. John:
Missouri River (near Helena, Montana, USA) 3
James St. John:
Missouri River (near Helena, Montana, USA) 4
James St. John:
Missouri River (near Helena, Montana, USA) 5
James St. John:
Missouri River Valley (near Helena, Montana, USA) 1
James St. John:
Missouri River Valley (near Helena, Montana, USA) 2
James St. John:
Hauser Lake (near Helena, Montana, USA) 1
James St. John:
Hauser Lake (near Helena, Montana, USA) 2
James St. John:
Hauser Lake (near Helena, Montana, USA) 3
James St. John:
Hauser Lake (near Helena, Montana, USA) 4