John McCormack was in a party of four miners who prospected the Big Salmon to its source in the summer of 1887. They met George Dawson and described the highest lake. McCormack named it Quiet Lake.1)
George Dawson, Report on an exploration in the Yukon District and adjacent northern portion of British Columbia, 1887. GSC, Whitehorse: Yukon Historical and Museums Association, 1987: 150-51.