All the elegiacal poets, and André Chénier in particular, have evinced recollections of him.
— from Initiation into Literature by Émile Faguet

The Tehuelches and the Gennakens have mentioned similar animals to me, of whose existence their ancestors had transmitted the remembrance; and in the neighbourhood of Rio Negro, the aged Cacique Sinchel, in 1875, pointed out to me a cave, the supposed lair of one of these monsters, called 'Ellengassen'; but I must add that none of the many Indians with whom I have conversed in Patagonia have ever referred to the actual existence of animals to which we can attribute the skin in question."
— from Mammalia by Frank E. (Frank Evers) Beddard