1. L. O. Bacon Relationship of gravity to geologic structure in Michigan‘s Upper Peninsula 1956
2. L. O. Bacon Subsurface geologic structure in the Jacobsville-Gay area of the Keweenaw Peninsula as interpreted from geophysical data 1960
3. L. O. Bacon Investigation of the thickness of the Jacobsville sandstone by reflection seismic methods 1964
4. Aero-magnetic survey of parts of Baraga, Iron, and Houghton Counties, Michigan, with preliminary geologic interpretation;Balsley;U. S. Geol. Surv, Geophys. Invest.,1949
5. J. R. Balsley J. L. Meuschke Jean Blan-chett Aeromagnetic map of the South Range quadrangle, Houghton County, Michigan 1963a