A 1924, Robinson ya shawo kan mai sassaka Gutzon Borglum ya yi tafiya zuwa yankin Black Hills don tabbatar da sassaka za a iya cika. Shirin farko shi ne a yi sassaka a cikin ginshiƙan dutse da aka sani da Needles. Duk da haka, Borglum ya fahimci cewa Needles da aka lalata sun yi siriri sosai don tallafawa sassaka. Ya zaɓi Dutsen Rushmore, wuri mafi girma, a wani ɓangare saboda yana fuskantar kudu maso gabas kuma yana jin daɗin fuskantar rana. Borglum ya ce ganin Dutsen Rushmore, "Amurka za ta yi tafiya tare da wannan sararin samaniya".
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