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

Judyth Baker makes a good point that the shirt on Doorway Man can't be Lovelady's. And, if the shirt can't be Lovelady's, then the man can't be Lovelady. And, if the man isn't Lovelady (and he's not) then he HAS to be Oswald. 

It comes down to a default. This is how Jim Fetzer puts it on the Overview page of the OIC website:

"This is a default situation. There are only two possibilities for Doorman's identity, even theoretically, and they are Lee Harvey Oswald and Billy Nolan Lovelady, who was another TSBD worker. Nobody is suggesting that it may have been a third person, perhaps an anonymous stranger who was walking by. All of the individuals standing on the steps were TSBD employees, and the only one who had the remotest resemblance to Oswald was Billy Lovelady." 

"And keep in mind that their similarities have been greatly exaggerated--they really didn't look that much alike. How could they when one weighed 170 pounds or more (Billy) and the other weighed 131 pounds (Lee), making a 40 pound weight difference between them. We'll have more to say about that later."

"Our approach is going to be to establish the likeness of Oswald and Doorman on the one hand, and the unlikeness (the stark dissimilarity) of Lovelady and Doorman on the other. Since there are only two candidates for Doorman, evidence that rules out Lovelady as Doorman automatically supports Oswald. So, Lee wins by default just by proving that Billy could not be Doorman." 

And when you get right down to it, you realize that the whole idea that these two individuals, who look so very much alike, and who are dressed the same, and who are configured the same clasping their hands in front, could be two different men is an idea that is both insane and sanguinary. 

That is the same guy, and only the bloodied deny it.  If you want a litmus test for blood, this is it.