Analysis of information sources in references of the Wikipedia article "فردیناند واندویر هایدن" in Persian language version.
[The famous tale of Hayden:] On a fossil-hunting trip to the Black Hills, the young geologist-paleontologist was intercepted by some suspicious Sioux. He was carrying a bag. The Sioux told him to empty it. Rocks tumbled to the ground. Culturally disposed to pity and respect for the insane, they gave one another looks and sent him on his way. Thereafter they called him Man Who Picks Up Stones Running.
