This may be a couple of months old, but it’s worth noting that the most recent Google Maps coverage for Annapolis and adjacent areas has fairly recently been up-graded substantially with razor sharp 2009 aerial photos that give better detail than ever before.

Here’s an example, showing the site of the South River Federation offices at the Oak Grove Marina: —->>

Also, note that (the free) Google Earth application from Google has the “history” feature which means that you can compare features in this 2009 coverage with aerial photos going back 20 years or more.