Thomas M. Bannon was also a self-taught mountaineer. Although his name is not widely known in mountaineering circles, during his surveying career from 1889 to 1917 he climbed nearly one thousand summits in the American West. More than two hundred of these summits were in Idaho. Bannon’s cryptic reports, supplemented by the rock Cairns, Wooden triangulation signals, chiseled cross-reference marks; … Continue reading →