re: Aerial photos
Until plot maps arrive, I'm using terraserver.microsoft.com(terraservice.net) to get an idea why someone wants to sue me for "condemnation of right away" (easment).
You get both USGS photos [some old, some not] and topo maps. Tip: click on the "print" button and you see about 50% more coverage.
Terraserver is also useful for gold prospecting. Long. and Lat. are listed on registered claims and can give you an idea of areas where gold has been found previously.