Oswald wore that shirt when he was arrested. If he was not wearing that shirt while shooting from the sniper's nest window, then he removed it while he was waiting for the motorcade to arrive and then used that shirt to quickly wipe down the rifle in hopes of removing his fingerprints.
It would have taken Oswald mere seconds to wipe down the rifle and then put the shirt on as he descended the first flight of stairs.
He changed his shirt and trousers at his room.
The shirt he was arrested in wasn't the shirt he wore to work on 11/22/63.
Officer Baker testified to the WC that he was wearing different clothes when he saw him at the police
station than when he saw him in the TSBD.
Fibers matching the arrest shirt to the TSBD Carcano point to a frame up not Ozzie's guilt.
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REPORT OF CAPT. J. W. FRITZ, DALLAS POLICE
DEPARTMENT
INTERROGATION OF LEE HARVEY OSWALD~snip~
I asked him where he went to when he left
work, and he told me that he had a room on 1026 North Beckley, that he
went over there and changed his trousers.....~snip~