Simple Bouguer gravity map of Massachusetts

Aeromagnetic map of Baltimore County and Baltimore City, Maryland

Aeromagnetic map of the Kabetogama Lake-Grassy Lake area, St. Louis County, Minnesota

Aeromagnetic map of the Warren quadrangle, Worcester, Hampden, and Hampshire Counties, Massachusetts

Aeromagnetic map of the East Brookfield quadrangle, Worcester County, Massachusetts

Aeromagnetic map of the Springfield South quadrangle, Hampden County, Massachusetts, and Hartford and Tolland Counties, Connecticut

Aeromagnetic map of the South Canaan quadrangle and parts of the Cornwall and Ashley Falls quadrangles, Litchfield County, Connecticut

Aeromagnetic map of the Windsor Locks quadrangle and part of the Hartford North quadrangle, Hartford County, Connecticut

Aeromagnetic map of the Stafford Springs quadrangle and part of the South Coventry quadrangle, Tolland County, Connecticut

Aeromagnetic map of the Colebrook-Umbagog Lake area, New Hampshire and Vermont

Aeromagnetic map of the Framingham quadrangle, Middlesex and Worcester Counties, Massachusetts

Aeromagnetic map of parts of the Kramer and Boron quadrangles, southeastern California

Aeroradioactivity map of the Chicago area, Illinois and Indiana

Aeromagnetic map of the Kingston, Kellogg, and part of the Fernwood quadrangles, Shoshone, Benewah, and Kootenai Counties, Idaho

Aeromagnetic map of the Plains, Perma, Superior, and Tarkio quadrangles, Sanders, Mineral, and Missoula Counties, Montana