I just realized something. It hit me like a ton of bricks. I know now why they immediately stripped Jack Ruby down to his undershorts when they got him up to the 5th floor. And I should have figured it out months ago.
First, there is no doubt that they did it. It's in the arrest reports. It's also in Elmer Gertz's book, Moment of Madness, that they immediately stripped Jack Ruby down to his undershorts.
The reason they did it is: SO THEY COULD GO THROUGH HIS PANTS AND GET HIS PAPERWORK FROM WESTERN UNION. They couldn't just ask him for it. Because then he would have produced it, and then what? They could hardly replace it with the phony ones right before his eyes. But, if they just asked him for his pants, then someone could take his pants, go into the next room, rifle through them, get the paperwork, and then replace it with the phonies.
And then, it's known that they did give him his own pants to put back on. The cabana suit didn't enter the picture until late in the day. So, they instructed him to put his pants back on, and then, at some point, they asked him about the money order and when he sent it.
Ruby: It was about 10:15.
Sorrels: No, it couldn't have been. You must mean 11:15.
Ruby. 11:15? No. I could swear it was 10:15.
Sorrels: You have the receipt, don't you? Let's take a look at it.
Ruby: Yeah, sure, it's my pocket. (takes it out and hands it over)
Sorrels: (looks at it) 11:15, just as said. (shows it to Ruby)
Ruby: Son of a gun. I'm bewildered. It seems like I lost an hour somewhere.
Sorrels: It can happen to anybody. (turns to aide) File this as evidence.
Now, if you don't agree with that, what's your explanation for why they stripped Jack Ruby down to his underpants immediately upon arresting him? THEY DID IT SO THAT THEY COULD GO THROUGH HIS PANTS AND GET HIS PAPERWORK AND REPLACE IT WITH THEIR PHONIES- whether you like it or not.