My OLPC Community Book Sprint DC Poster 2009
High quality RGB JPEG at 200dpi 13x19" or A3+. This image will print on to 11x17" or 8 1/2x11" with a tiny bit of cropping on the left and right vertical edges. The lines of type and logos will still fit fine.
Download original 200 dpi file
Bordered thumbnail version for blog / wiki posts is here
Original background image here