There are 3 report images, 3 book images, 1 CD image and a full width banner image that you can use. Below are samples of all four images and the their respective dimensions. Click on the hyperlink below to download a zip file containing the full size images.
Sample report image (200, 350 and 500 pixels):
Sample book image (200, 350 and 500 pixels):
Sample CD image (300 pixels):
Sample banner image (940×198 pixels):