Aeromagnetic survey of the Oelwein and part of the Dubuque North 1:100,000 quadrangles, Wisconsin and Iowa /

[Reston, Va.?] : The Survey, 1999

Preliminary geologic map of the San Jose 30 x 60-minute quadrangle, California : a digital database /

[Reston, Va.?] : The Survey, 1999

Aeromagnetic survey of parts of the Escanaba and Manistique 1:100,000 quadrangles, Wisconsin and Michigan /

[Reston, Va.?] : The Survey, 1999

Geologic map of the Nazareth quadrangle, Northampton County, Pennsylvania /

[Reston, Va.?] : The Survey, 1997