----------------------------Original message---------------------------- The existence of such a map would certainly seem possible. Orcadian tradition maintains that sailors/explorers from Orkney visited North America in the early 1400's, and indeed the chapel at Roslyn just south of Edinburgh built by the Earls of Orkney around 1440 includes, amongst other things, depictions of maize cobs in the stone carvings. You would need to confirm this with an expert on Orkney and Norse history as I am going by memory from the guide book for Roslyn Chapel. regards, Tim Rideout Bartholomew