Hi,
Check out the HD Image test files tkeo posted here:
https://www.mobileread.com/forums/sho...&postcount=779
Also a few posts earlier than that there was a Doormouse test case that had them as well (when we were fixing the split bug that lost mobi 8 images)
https://www.mobileread.com/forums/sho...&postcount=740
Not sure if the link in that post is still active or not.
KevinH