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

Lovelady said he was visible  on the top level, and Doorman and Black Hole Man are both visible on the top level. The only other one visible on the top level is Black Tie Man, but you know Lovelady wasn't a businessman wearing a suit and tie, so that couldn't be him.  So, that means he must have been Black Hole Man, since you know Doorman was Oswald, and Lovelady said he was visible on the top level. The arrow on CE 369 only drives the point home.