BBC News - Health - Medical Notes - Conjoined Twins http://news.bbc.co.uk/1/hi/health/medical_notes/q-s/895922.stm Ethical and medical implications of separating Siamese twins.
BBC - Science & Nature - Horizon - Conjoined Twins http://www.bbc.co.uk/science/horizon/2000/conjoined_twins.shtml Transcript of a BBC show on conjoined twins.
Social History of Conjoined Twins http://zygote.swarthmore.edu/cleave4b.html