The Douglas Campbell Show: Irrigation (mechanized), Rt. 81, S of Gavins Point Dam, NE (2002)
The Douglas Campbell Show: Wild parsley, Niobrara State Park, NE (2002)
The Douglas Campbell Show: Farmland, Route 12, NE (2002)
The Douglas Campbell Show: Bottomland and prairie, Ponca, NE (2002)
The Douglas Campbell Show: Missouri River at Vermillion Bridge, NE (2002)
The Douglas Campbell Show: Missouri River bluff and bottomland, Ponca State Park, NE (2002)
The Douglas Campbell Show: Missouri River, Niobrara State Park, NE (2002)
The Douglas Campbell Show: Missouri River, Niobrara State Park, NE (2002)
The Douglas Campbell Show: Gavins Point Dam, Missouri River, NE (2002)
The Douglas Campbell Show: Prairie flowers, Ashfall Fossil Beds, NE (2002)
The Douglas Campbell Show: Missouri River bottomland, Ponca State Park, NE (2002)
The Douglas Campbell Show: Missouri River, Gavins Point Dam, NE (2002)
The Douglas Campbell Show: Cultivation, Rt. 81, S of Gavins Point Dam, NE (2002)
The Douglas Campbell Show: Farmland, Rt. 81, S of Gavins Point Dam, NE (2002)
The Douglas Campbell Show: Farmland, Rt. 12, NE (2002)
The Douglas Campbell Show: Grassland, Niobrara, NE (2002)
The Douglas Campbell Show: Confluence of Niobrara and Missouri Rivers, NE (2002)
The Douglas Campbell Show: Missouri River, Niobrara State Park, NE (2002)
The Douglas Campbell Show: Niobrara River, Niobrara State Park, NE (2002)
The Douglas Campbell Show: Missouri River, Niobrara State Park, NE (2002)
The Douglas Campbell Show: Missouri River, Niobrara State Park, NE (2002)
The Douglas Campbell Show: Missouri River, Niobrara State Park, NE (2002)
The Douglas Campbell Show: Campground + Niobrara River, Niobrara State Park, NE (2002)
The Douglas Campbell Show: Niobrara River, Niobrara State Park, NE (2002)
The Douglas Campbell Show: Prairie flowers, Ashfall Fossil Beds, NE (2002)
The Douglas Campbell Show: Prairie wildflowers, Ashfall Fossil Beds, NE (2002)
The Douglas Campbell Show: Prairie flowers, Ashfall Fossil Beds, NE (2002)
The Douglas Campbell Show: Missouri River, Niobrara State Park, NE (2002)
The Douglas Campbell Show: Visitor Centre, Ashfall Fossil Beds, NE (2002)
The Douglas Campbell Show: Location, Ashfall Fossil Beds, NE (2002)