looks like its from the "Urban Areas" section of terraserver.microsoft.com. Terraserver is cool, but you can only view a few images at a time (about 3x3 i believe), but they DO allow for offsite linking, so i made a php script to allow me to see the whole thing at once. Here's that image blown up to full size (don't worry, its made up of smaller images to reduce load time:
http://coffeejedi.darkimage.net/dlr-dl.php
and here's the Magic Kingdom, Epcot, and DCA:
http://coffeejedi.darkimage.net/wdw-mk.php
http://coffeejedi.darkimage.net/wdw-epcot.php
http://coffeejedi.darkimage.net/dlr-dca.php
now here's the REAL fun part... you can print them out! normally, a web browser will only print the leftmost column, so i got around that little fact
(click the link in my sig for the other parks printable)
http://coffeejedi.darkimage.net/wdw-mk-print.php
(set your printer margins to 0" and the orientation to LANDSCAPE)
I just joined, the link in my sig points to all these images in both scrollable and printable forms, as well as an introduction/explanation, and a list of interesting details to look for!