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

Here is part of the testimony of Robert Stovall of Jaggar-Chiles-Stovall to the Warren Commission. See if it doesn't like they could alter the Altgens photo: 

Mr. JENNER. Do you do any work for any federal agency?
Mr. STOVALL. Yes, sir.
Mr. JENNER. Is it secret or confidential work or classified work of any kind?
Mr. STOVALL. On occasion we do. Most of it is not, but we do on occasion.We are cleared through the Navy Bureau Materiel here, although I believe it now has been incorporated under the Department of Defense as a single unit.Mr. JENNER. I take it you do a lot of camera work?
Mr. STOVALL. Considerable; yes.
Mr. JENNER. But it is commercial camera work?
Mr. STOVALL. Right; it isn't even photography. It is only the part of reducing and enlarging printed material that we set in our type shop. It has to be resized and we also make screen
veloxes.
Mr. JENNER. Explain for the record what that is.
Mr. STOVALL. A velox is a photographic print that has been screened by a dot press to separate the tone values in order that a camera can shoot them in black and white or in any group of colors, but it breaks it down into minute units that a camera will recognize.
Mr. JENNER. That's like half tones for newspaper printing?
Mr. STOVALL. Right.