i also have some idea of who lived in north siberia (both regions had no written language at the time so i'm basing all this on ethnic groupings) and the region was sparesly populated with little or no relevance to european or global history (for similar reasons) but if you wish to incorporate it the major groups were the Finnic peoples, Yukaghir, Uguric, and Samoyedic
link with map and subdivisions of ethnic groups (doubt it would include a map)
http://en.wikipedia.org/wiki/Samoyedic_peoples