Treasure hunters are getting more and more modern these days.

Lots of folks I know are using Google Earth to make maps and then cross referencing these images against historical maps to look for the way land has changed in order to spot periods of trash - the hunt for antique and collectible glass bottles and pottery drives the technological race.

Anyway I have discovered that there is lots to be learned by using powerful local search programs. I use Poynt because it accesses the yellow pages data - but there are many other programs and local programs and some access historical data.

The McGill Library in Montreal Canbada has the Black Adder map collection which contains searchable 1878 land transfer maps. anyway... let me know if you want that link.