The hot springs were used by area Athabascans prior to the gold rush. The first non-Native to discover the springs was William Greats, in 1893, and the springs were probably used by local miners. In 1905, Cassius Monohan homesteaded 106 acres around the springs, and sold it to Franklin Leach in 1909, who developed a resort. The Circle Springs post office was established in 1924.
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History and map graphic used with permission from the Alaska Department of Community and Economic Development