The identity of the notions which the different tribes have conceived of a future existence, and the character of the 'world of spirits,' seems still more general. They fancy heaven but another material world, superior, it is true, yet resembling this — a kind of elysian vale, or paradise — a 'happy hunting-ground,' abounding in game and all their comforts of life, which may be procured without labor. This elysium they generally seem to locate 'upon the sky,' which they fancy a material solid vault.

Commerce of the Prairies (1831–1839), Chapter 28 Aborigines Of America