Porter, K.W.—Cobban, W.A., Dyman, T.S., and Porter, K.W., 2005, “Paleontology and Stratigraphy of Upper Coniacian – Middle Santonian Ammonite Zones and Application of Erosion Surfaces and Marine Transgressive Strata in Montana and Alberta,” Cretaceous Research, v. 26, p. 429-449.

Porter, K. W.—Hearn, B. C., Jr., Bergantino, R. N., and Porter, K. W., 2002, Geologic map of the Rocky Boy 30' x 60' quadrangle north-central Montana: Montana Bureau of Mines and Geology Open File Report MBMG 451, scale 1:100,000. 

Porter, K. W., Kennelly, P. J., and Deal, E. G., 2002 (abstract), Montana’s geologic mapping program – the role of STATEMAP: Rocky Mountain Section, Geological Society of America Abstracts with Programs, v. 34, no. 4, p. P-36. 

Porter, K. W., Wheaton, J., and Miller, M., 2002, Potential for a public water supply from the Madison Limestone in the eastern Big Snowy Mountains and Little Snowy Mountains, Montana: Montana Bureau of Mines and Geology Open-File Report 449, 25 p. 

Porter, K. W.—Wilde, E. M., and Porter, K. W., 2002, Geologic map of the Winifred 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open File Report MBMG 437, scale 1:100,000.