Denny, F.B., and M.J. Seid, 2014, Bedrock Geology, Hardin County, Illinois: Illinois State Geological Survey, USGS-STATEMAP contract report, map 1:48,000 scale, 2 sheets and report, 20 p. http://www.isgs.illinois.edu/maps/county-maps/bedrock-geology/hardin
Ismail, A., F.B. Denny and M. Metwaly, 2014, Comparing continuous profiles from MASW and shear-wave reflection seismic methods: Journal of Applied Geophysics, Vol. 105, pp 67-77. http://www.sciencedirect.com/science/article/pii/S0926985114000767
Denny, F.B., J.A. Devera, and A. Kittler, 2013, Bedrock Geology of Saline Mines Quadrangle, Gallatin and Hardin Counties, Illinois: Illinois State Geological Survey, Prairie Research Institute, IGQ Saline Mines-BG, 2 sheets, 1:24,000; report, 10 p. http://isgs.illinois.edu/maps/isgs-quads/saline-mines-bedrock-geology-2013-originally-2012
Denny, F.B., A. Goldstein, J.A. Devera, D.A. Williams, Z. Lasemi, and W.J. Nelson, 2008, The Illinois‑Kentucky Fluorite District, Hicks Dome, and Garden of the Gods in Southeastern Illinois and Northwestern Kentucky, in A.H. Maria, and R.C. Counts, eds., From the Cincinnati Arch to the Illinois Basin: Geological Field Excursions along the Ohio River Valley: Geological Society of America Field Guide 12, p. 11‑24. http://fieldguides.gsapubs.org/content/12/11.short