Thomas H. Lewis No description specified. 1-4 (4 Records) Documents The Continuing Use of Petroglyph Sites (1990) Cultural Resources Inventory of the Remnant Pictographs at Alkali Creek, Yellowstone County, Montana (1983) New Petroglyph Site In Yellowstone County (1983) Pryor Creek Petroglyphs and Pictographs: 24YL405 and 24YL406 (1985)