A special thanks to Dave Berry;

Source of Gangplank drawing; Structural geology of the Laramie Mountains, southeastern Wyoming and northeastern Colorado DLR Blackstone 1996 Wyoming State Geological Survey

United States History, Texas Aquifer, Kansas Aquifer, Nebraska Sandhills, Nebraska Sand Dunes, Transcontinental Railroad, Lincoln Highway, Interstate 80, Anorthosite, Ogallala Aquifer, Ogallala Formation, Geologic History,