1. Perkin Centenary London: 100 Years of Synthetic Dyestuffs;Read,1958
2. This and That: on color and catecholamines
3. The Development of the Chemistry of Commercial Synthetic Dyes 1856–1938;Rowe,1938
4. The origin of the coal-tar colour industry, and the contributions of Hofmann and his pupils
5. The Natural Organic Colouring Matters;Perkin,1918