Backstage girls

I was looking at my copy of Curt Gunther's wonderful photo book of the Beatles 1964 tour and noticed these backstage photos from Baltimore.  These two girls are in most of the photos and they are just sitting on a couch.  I wonder who they are and what they were doing hanging out with the Beatles.  Were they reporters?   Fans?   Girls that the Beatles (or one of the other guys) chose to party with?  

photos by Curt Gunther