Graeber / Wengrow 23-4: "[A]mong Iroquoian-speaking peoples in the sixteenth and seventeenth centuries it was considered extremely important literally to realize one's dreams. [...] On the Great Plains, decisions to travel long distances in search of rare or exotic items could form part of vision quests."
"dream-guessong" is a kind of collective dream therapy among the Wendat that predates Freud's Interpretation of Dreams by 250 years, see 454-5