A cyanotype of 'Polysiphonia violacea' from 'Photographs of British Algae: Cyanotype Impressions', made by Anna Atkins (1799-1871) in 1843. 'Photographs of British Algae: Cyanotype Impressions', a collection of cyanotype photograms of algae, was self-published in installments over ten years from 1843. This first installment is credited as the first photographically illustrated book.