Yes, the Applewhite image.
NBC has an extensive analysis and back and forth with a doubter here:
http://nativeborncitizen.wordpress.com/2013/07/29/following-the-applewhite-document/
“Now check out the Metadata. The caption indicates that it is a photo (AP Photo J. Scott Applewhite) and the date/time shows that the photo was captured (EXIF) Date Time Original: Apr 27, 2011 8:53:21 AM. So let’s look at a plausible workflow: Applewhite used Raw Camera Capture to import the RAW photograph into Photoshop and saved it as a JPEG. The resulting JPEG was sent to the DC office or alternatively, the conversion was done at the DC office based on the raw data. Note how the Creator is Adobe Acrobat 8.26 and the Produced Adobe Acrobat 8.26 Image Conversion Plug-in. Someone created a PDF from a converted image.”
I can’t find it at the moment but, IIRC, NBC claimed that the replicated lowercase “e” for example in the WH pdf is NOT present in the AP/Applewhite image.
If I am following NBC’s argument correctly, the Applewhite image did NOT use the same Mixed Raster Compression to create the JPEG employing the image segmentation algorithm that was used by the WH Xerox copier.
Does the Applewhite image have the material that was hidden by the clipping mask?