I believe it.....................
I recall (probably a SunkenCiv thread) a story about the “first” white explorers of the St. Lawrence Seaway. The indians had stories of a city of gold somewhere to the north. And stories of a one-legged giant (or dwarf or troll or something).
The story of the one-legged giant was similar to the story told in Europe (British isles?). The historians surmised that the St. Lawrence Seaway was visited often (yearly?) by European fishermen. And perhaps they either figured it wasn’t a “new” land, or they wanted to keep their abundant fishing grounds a secret? I think the indians might have had stories about the white fishermen as well?