- Dempsey, William J.; Duffner, R. T.; Keller, Fred, Jr.; Henderson, J. R., Jr., 1950, Total intensity aeromagnetic map, Bonne Terre quadrangle, Missouri: Geophysical Investigation Map 14, 1 map.,
- Dempsey, William J.; Duffner, R. T.; Keller, Fred, Jr.; Hnederson, J. R., Jr., 1950, Total intensity aeromagnetic map, Potosi quadrangle, Missouri: Geophysical Investigation Map 13, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Carroll County, Indiana: Geophysical Investigation Map 22, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, De Kalb County, Indiana: Geophysical Investigation Map 23, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Howard County, Indiana: Geophysical Investigation Map 24, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Huntington County, Indiana: Geophysical Investigation Map 25, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Kosciusko County, Indiana: Geophysical Investigation Map 26, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Lagrange County, Indiana: Geophysical Investigation Map 27, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Miami County, Indiana: Geophysical Investigation Map 28, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Noble County, Indiana: Geophysical Investigation Map 29, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Porter County, Indiana: Geophysical Investigation Map 30, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Steuben County, Indiana: Geophysical Investigation Map 31, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Wabash County, Indiana: Geophysical Investigation Map 32, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Wells County, Indiana: Geophysical Investigation Map 33, 1 map.,
- Dempsey, William J.; Henderson, John R., Jr.; Duffner, R. T., 1950, Total intensity aeromagnetic map, Whitley County, Indiana: Geophysical Investigation Map 34, 1 map.,
- Dempsey, William J.; Hill, M. E., 1950, Total intensity aeromagnetic map, parts of Guadalupe and De Baca Counties, New Mexico (R. 21 E.-R. 26 E. and T. 3 N.-T. 6 N.): Geophysical Investigation Map 15, 1 map.,
- Dempsey, William J.; Hill, M. E., 1950, Total intensity aeromagnetic map, parts of Guadalupe and De Baca Counties, New Mexico (R. 16 E.-R. 21 E. and T. 3 N.-T. 6 N.): Geophysical Investigation Map 16, 1 map.,
- Dempsey, William J.; Hill, M. E., 1950, Total intensity aeromagnetic map, parts of San Miguel and Guadalupe Counties, New Mexico (R. 21 E.-R. 25 E. and T. 6 N.-T. 12 N.): Geophysical Investigation Map 17, 1 map.,
- Dempsey, William J.; Hill, M. E., 1950, Total intensity aeromagnetic map, parts of San Miguel and Guadalupe Counties, New Mexico (R. 16 E.-R. 21 E. and T. 6 N.-T. 10 N. and part of Anton Chico grant): Geophysical Investigation Map 18, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Pike County, Indiana: Geophysical Investigation Map 10, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Spencer County, Indiana: Geophysical Investigation Map 11, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map of Warrick County, Indiana: Geophysical Investigation Map 12, 1 map ;80 x 70 cm.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Adams County, Indiana: Geophysical Investigation Map 20, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Allen County, Indiana: Geophysical Investigation Map 21, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Boone County, Indiana: Geophysical Investigation Map 35, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Clinton County, Indiana: Geophysical Investigation Map 36, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Gibson County, Indiana: Geophysical Investigation Map 37, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Hendricks County, Indiana: Geophysical Investigation Map 38, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Montgomery County, Indiana: Geophysical Investigation Map 39, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Perry County, Indiana: Geophysical Investigation Map 40, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Putnam County, Indiana: Geophysical Investigation Map 41, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Tippecanoe County, Indiana: Geophysical Investigation Map 42, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map of Vanderburgh County, Indiana: Geophysical Investigation Map 43, 1 map ;77 x 56 cm.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Vermillion County, Indiana: Geophysical Investigation Map 44, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Warren County, Indiana: Geophysical Investigation Map 45, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Daviess County, Indiana: Geophysical Investigation Map 7, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Dubois County, Indiana: Geophysical Investigation Map 8, 1 map.,
- Henderson, John R., Jr.; Meuschke, J. L., 1950, Total intensity aeromagnetic map, Martin County, Indiana: Geophysical Investigation Map 9, 1 map.,
