But what does make a case is the following corroborated evidence.
sigh....
Oswald ordered the rifle.
That picture doesn't demonstrate that Oswald ordered a rifle. And neither does unscientific handwriting "analysis" of two block letters on a photo of a microfilm copy of a two-inch order coupon.
Oswald possessed the rifle.
That picture doesn't demonstrate that Oswald possessed that particular rifle, because the rifle in that photo has not been uniquely identified.
Oswald's rifle
LOL
was found at Oswald's work
A lot of people worked there.
with Oswald's prints.
No, some prints were found near the trigger guard which were useless for identification purposes, and a partial palmprint was found on an index card a week later.
How any of this is supposed to prove that Oswald shot JFK is anyone's guess. The only thing it proves is that you think repeating "Oswald's rifle" over and over again somehow makes it true.