Maps are very useful in tracing ones family history.  The proximity of one city center to another may help you find another source for that long lost baptism record.  Or it could help determine the probability that your ancestor would show up on a census in a certain parish, when your last record of them was in a different parish just a few years earlier.

Please note that all paid sites are denoted by $$$.  All other sites provide free information.  Some free information sites may reference sites that require payment, but the general basis of the site is free.

Maps from Around the World
  1. David Rumsey Historical Map Collection

Canadian Maps
  1. Canadian County Atlas Maps (~1880s) - McGill University
  2. Illustrated Historical Atlas of the Counties of Frontenac, Lennox and Addington - 1878 (Ontario)
  3. Illustrated Historical Atlas of the County of Carleton (including Ottawa) - 1879 (Ontario)

Ireland Maps