[Small print (1860?) of Christina and Millie McCoy, 'The African Twins' (or Two-Headed Nightingale) conjoined twin girls, born in North Carolina in 1851. Their mother was a slave].

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[Small print (1860?) of Christina and Millie McCoy, 'The African Twins' (or Two-Headed Nightingale) conjoined twin girls, born in North Carolina in 1851. Their mother was a slave]. Public Domain Mark. Source: Wellcome Collection.