Expeditions & surveys; Railroad surveys; Lightning Lake (Mont.)
"Lightning Lake is a very beautiful sheet of water, so called from the fact that during Captain Pope's expedition, while encamped here, one of those storms so fearfully violent in this country occurred, during which one of his party was...
Expeditions & surveys; Railroad surveys; Springs; Bitterroot Range
Near the summit of the Bitter Root Mountains, "a hot spring with a temperature of 132 degrees, around which was a fine prairie camping ground." Plate LVII.