There's an interesting story in Douglas Gifford's book "Warriors, Gods and Spirits from Central & South American Mythology" (which I have only read as a Finnish translation "Intiaanisotureita ja henkiolentoja", WSOY 1985) from the Andean Incas, if my memory serves me correctly, titled "Girl from heaven". It tells of a potatoe farmer that has trouble with someone coming in the middle of the night to steal his potatoes (the best in the whole land). To counter this the farmer sends his son to guard the field at night, in which he fails, always falling asleep at the critical moment and letting the potatoe-thieves gain their loot. But then one night he succeeds in staying awake and actually sees the plunderers. It turns out they're beautiful girls with white skin and golden hair, wearing garments of silver. The narrator tells that they are the star people of heaven. But to not spoil the pleasure of reading the story yourself and probably not being able to paraphrase it eloquently enough myself (and being lazy), I'll just summarize certain points.
- they look like white skinned humans, with blonde hair (the Nordic aliens?)
- are identical to each other in appearance (clones?)
- live some place in heaven, to where it takes a year to travel one way (a space-station, planet, moon?)
- can descend from and ascend to the sky and pass through closed doors if wearing the silvery garments (tractor beam and whatever?)
Obviously, one could just see them as personifications of the stars, as the daughters of Sun and Moon, with white skin, golden hair and silvery clothing merely implying the light of stars, along with supernatural abilities that go with the profession. And also considering that the general theme of white, bearded gods (e.g. Quetzalcoatl) in the Amerindian mythology as referring to any pre-Columbian Caucasian presence in the Americas may be questioned, at the end it may not be up to anything revolutionary with regards to history.
http://frontpage2000.nmia.com/~nahualli/Quetzalcoatl/Elements/Bearded.htm
http://frontpage2000.nmia.com/~nahualli/Quetzalcoatl/Elements/White.htm
But still, there is also the story of Enoch, which depicts the sons of God/gods, or angels, that descended to Earth to mate with human females, teach them many a forbidden art and produce gigantic off-spring, as white skinned and white haired men (along with God himself), in lieu with the uniform Biblical depiction of angels as simply (wingless) human males, cherubs and other such rarely occurring more fanciful creatures aside. The Book of Enoch says about Noah (106:2,5,6):
"And his body was white as snow and red as the blooming of a rose, and the hair of his head and his long locks were white as wool, and his eyes beautiful... I have begotten a strange son, diverse from and unlike man, and resembling the sons of the God of heaven; and his nature is different and he is not like us, and his eyes are as the rays of the sun, and his 6 countenance is glorious. And it seems to me that he is not sprung from me but from the angels..."
http://wesley.nnu.edu/noncanon/ot/pseudo/enoch.htm
There thus seems to be intercontinental continuity of mythical imagery that ties in with the modern UFO-lore of the Nordics.
http://www.abductee.ca/five/nordics.html
It seems to me that all that is said about these Nordics (or any aliens for that matter) is rather questionable, or at least we don't know what is fact or fiction as long as they make themselves supposedly appear only to the chosen and few (I mean only to Billy Meier of course, *cough-cough*). But even if these are just a figment of imagination, there still remain the myths of the past, that are at least interesting, if not suggestive with regard to the hypothesis of the existense of a race of technologically advanced space-faring humans stretching to antiquity. Of course it could be argued also with regard to the angels that their "Scandinavian" appearance is also due to their association with stars. And I would also be interested of learning whether albinos perhaps held any special significance in the Middle-Eastern cultures, as they're specifically_white_haired, as Lamech's strange son is described having been, instead of simply being blonde yellow.
And irrespective of how one might interpret the "Girl from heaven" story, I would still be interested of tracing its origins and context in the South-American mythologies. So does anyone happend to know more?