The Elgin Archives has now posted images of early Elgin County Township Maps ca 1802-1837
See Thomas Talbot Fonds 1-46
These are very early maps showing penciled locations of first settlers by Col. Thomas Talbot.

Also included is an 1819 map of the settlement of St. Thomas showing the location of the Rapelje Mill.
1814 map of property owners Daniel Rapalje and Garret Oaks which was to become the future town of St. Thomas, Ontario