Aeromagnetic map of the Avery quadrangle, Shoshone County, Idaho, and Mineral and Sanders Counties, Montana
By: compiled by Lockwood, Kessler, and Bartlett, Inc.
Series: Geophysical investigations map -- GP-689.; Geophysical investigations (Geological Survey (U.S.)) -- GP-689.
Publisher: U.S. Geological Survey, 1969.
Place of publication: Washington, D.C
Format: Map
Subjects: Geomagnetism -- Montana -- Mineral County -- Maps.; Geomagnetism -- Montana -- Sanders County -- Maps.; Geomagnetism -- Idaho -- Shoshone County -- Maps.
Genres: Maps.
Notes: Includes index map.

"Aeromagnetic survey flown at 7,000 feet barometric elevation ... 1968."