Slides of lung tissue from Dr J C Wagners slide cabinet, 1958.

SOUTH AFRICA - MAY 31: Samples of lung tissue from S S V, a 42 year-old white female, who went to school near the large asbestos mill in Kuruman, South Africa, and was the daughter of an asbestos miner. Her case history, and that of her father, features in the Wagner, Sleggs and Marchand paper published in the British Journal of Industrial Medicine in 1960, famous for making the causal link between exposure to blue asbestos (crocidolite) and the lung cancer mesothelioma. (Photo by SSPL/Getty Images)