Blackfoot <a href="https://en.wikipedia.org/wiki/Travois" class="extiw" title="w:Travois">travois</a>. Anthropological Papers of the American Museum of Natural History. <a rel="nofollow" class="external text" href="https://books.google.com/books?id=_uwSAAAAYAAJ&amp;ots=2zgw8uggKR&amp;dq=material%20culture%20of%20the%20blackfoot&amp;pg=PP1#v=onepage&amp;q=material%20culture%20of%20the%20blackfoot&amp;f=false">Material culture of the Blackfoot Indians</a>. 1910. Clark Wissler. p. 89
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<span class="int-own-work" lang="en">Own work</span>