Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

Hondo the Wanderer tries to play the technobabble card to explain the missing arm.

Bpete Oneninesixnine The arm problem is simple. Polaroid 30 series film used a fixative that was applied after the photo was taken. If the fixative was not applied or incorrectly applied, the photo would immediately start to break down. Sections would fade or the finished chemical would flake. In addition, the roll film was processed in the camera by being pulled between rollers that would break a pod containing the developing chemicals. Depending on how the person pulled the film, the developers could be pressed out of the pod unevenly. 

That is ridiculous. We are seeing normal photographic quality in the area that the arm is missing. Compare it to the area nearby in front of the motorcycle cop's face.

So, those are the two areas we are comparing, and they look about the same. If there was an arm there, and it got lifted, totally destroyed, by a processing error, you would not be left with a nice clean background that matches the other side. You would be left with nothing, with noise. Look at it large.

There is nothing wrong there, photographically. The same grey background, showing what is the Grassy Knoll, appears there as it does on the other side. The only problem is that his arm is missing. To claim that a processing error completely destroyed his arm but left a nice clean matching background is ridiculous. It's just an armless guy against a normal background. It cannot be attributed to a processing error.