Notes from memory by Nick.
This film featured both Lisa Taylor and Clyda Rosen. It was not generally released but sold as "Women In Chains" I think in Super8 Format. It was widely advertised in porn mags of the day like Whitehouse and Playbirds. It was shot in 1976 but was still being sold 5-6 years later. The theme was of a women's prison where the women prisoners get involved with the guards and with each other. It was shot in a barn and the adjoining farm in the Harpenden/Luton area. Lisa did a bit part where a guard was threatening to have his dog screw her and proceeds to strip her, but she was not in any hard action as another woman sucked off the guard. Clyda was involved in a very explicit lesbian sequence on the farm. The film was shot in a hard version for export as well as a soft version - which I think got sold in the UK and aside from Lisa and Clyda there were other actors - three male and six female.