[SunkenCiv]

The City Of Light
by Jacob D’Ancona
http://www.amazon.com/exec/obidos/ASIN/0806524634/sunkencivilizati

The Itinerary of Benjamin of Tudela:
Travels in the Middle Ages
by Benjamin of Tudela
http://www.amazon.com/exec/obidos/ASIN/0911389091/sunkencivilizati

Legends of the Chinese Jews of Kaifeng
by Xin Xu
tr by Beverly Friend
illus by Ting Cheng
http://www.amazon.com/exec/obidos/ASIN/0881255289/sunkencivilizati

http://www.amazon.com/s?ie=UTF8&page=1&rh=n%3A4891%2Ck%3ANestorians%20in%20China

http://www.freerepublic.com/tag/nestorians/index

[gleeaikin]

There are various suggestions that Columbus had information about lands across the sea which gave him the courage to try to go there. I believe the Portuguese fishermen were harvesting the Grand Banks before 1492.