...where Adams heard the radio call and then walked down Houston street to the loading dock where she re-entered the TSBD prior to the building being sealed off by Sgt Harkness at around 12.36 or 12.37?
Adams didn't walk down to the Houston St. dock:
Mr. BELIN - Now at this time when you went back into the building, were there any policemen
standing in front of the building keeping people out?
Miss ADAMS - There was an officer on the stairs itself, and he was prohibiting people from entering the building, that is correct. But I told him I worked there.
Mr. BELIN - Did he let you come back in?
Miss ADAMS - Yes, sir.
Mr. BELIN - Then what did you do ?
Miss ADAMS - Following that, I pushed the button for the passenger elevator, but the power had been cut off on the elevator, so I took the stairs to the second floor.
It is obvious from this excerpt she re-enters the building through the front. There is one curious aspect about this part of her testimony that might relate to the route the assassin used to after the shooting - she says 'the power had been cut off on the elevator'. Adams worked on the 4th floor and every day she was at work she would have used this elevator at least twice. She would be extremely familiar with this particular piece of equipment, with how it operated normally.
In his affidavit taken on the day of the assassination Bill Shelley states that after the shots he ran into Gloria Calvery then "went back to the building and went inside and called my wife and told her what happened. I was on the first floor then and I stayed at the elevator and was told not to let anyone out of the elevator. I left the elevator and went with the police on up to the other floors I left Jack Dougherty in charge of the elevator"
I'm assuming the use of the word elevator (singular) refers to the passenger elevator by the front door. He uses the same singular expression in his WC testimony. If this is the case it would mean Adams never encountered Shelley on the first floor at any time in the aftermath of the shooting.