This is the best site for DCPC aerials...Google Earth is cool and all, but Live's Birdseye view gives great detail.  As best as I can tell, the pictures they have on file are from fall 2003, just before I started here.  Some things to note that have changed, would be some trees, the 1st tee area, the drainage on the fourth fairway and ninth fairway, etc.

 

To fully manipulate this, use the box on the left side of the picture to zoom in and out and use the compass to change perspective.  Use the cursor when it looks like a hand to grab the picture and move the map to explore further.  There is a 3-d option that requires a download, but it isn't worth it unless you want to look at the Boston skyline.