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

I have the gif file of the clip that Bryan Albert Doyle is talking about of Shelley and Lovelady in the Couch film. He claims that it shows Lovelady in a long-sleeved plaid shirt. 

There is only a tiny fraction of a second that you get the proper view of Lovelady, but I did manage to capture a ScreenSave of it.

And as you can plainly see, Lovelady's shirt is short-sleeved.