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

Aeromagnetic map of the Antelope Valley and part of the Garlock fault zone, south-central California

Aeromagnetic map of the Barre quadrangle, Worcester County, Massachusetts

Aeromagnetic map of the Maynard quadrangle, Middlesex County, Massachusetts

Aeromagnetic map of the Lexington quadrangle, Middlesex County, Massachusetts

Aeromagnetic map of part of the Marblehead South quadrangle, Essex and Suffolk Counties, Massachusetts

Aeromagnetic map of the Royalston Quadrangle, Worcester and Franklin counties, Massachusetts, and Cheshire County, New Hampshire

Aeromagnetic map of Minnesota

Aeromagnetic map of the Pepperell Quadrangle, Middlesex County, Massachusetts, and Hillsborough County, New Hampshire

Aeromagnetic map of the Ashby Quadrangle, Middlesex and Worcester counties, Massachusetts, and Hillsborough County, New Hampshire