As early as 1900, locals called for the creation of a national park at Shoshone Falls, although this proposal was never approved by Congress. In 1919 the Shoshone Falls Memorial Park Association proposed a memorial park at the falls for World War I veterans. The association hired California landscape architect Florence Yoch to design a plan for the park. However, these plans never materialized, in part due to the difficulties of obtaining the needed land from its previous owners. Frederick and Martha Adams later bought the land from Senator Clark, and donated it to the City of Twin Falls in 1932. The state of Idaho donated another tract of land in 1933 to add to the park.