This primary source comes from the Records of the U.S. Geological Survey.
National Archives Identifier:
516895Full Citation: Independence Rock, Wyoming. Noted landmark on the Oregon Trail, a granite dome rising out of the Sweetwater Plain, 195 feet high and 1500 yards in circumference. Origin of name obscure; Bonneville, in; 1870; Records of the U.S. Geological Survey, Record Group 57. [Online Version, https://docsteach.org/documents/document/independence-rock-wyoming-noted-landmark-on-the-oregon-trail-a-granite-dome-rising-out-of-the-sweetwater-plain-195-feet-high-and-1500-yards-in-circumference-origin-of-name-obscure-bonneville-in-1832-m, May 5, 2024]