In previous threads, I believe serious doubt has been cast upon the identification of a woman loitering down near the Stemmons sign post-assassination as being Gloria Calvery.
Linda turned up an interesting piece from FindaGrave concerning Gloria Calvery:
Immediately following the assassination she ran back to the TSBD, following about 10-15 feet behind the sprinting DPD Officer, Marrion Baker, and they went up the front steps and into the building, as was partially captured on the Cook-Darn