When were they taken?
Ms Abell believes the pictures date back to the 1950s or 60s because of the way the women are dressed.
She has launched an internet campaign to track down the models - one of whom she believes could be "Hawaiian or bi-racial" - along with the owner of the film.
"I have had some pretty awesome leads," she told the BBC.
"I think they may have been taken at Dockweiler in Playa del Rey in California. A girl who surfs near that beach emailed me with some pictures.
"When I overlaid them with the images I found, they were a perfect match.