The Quarto Group is a global illustrated book publishing group founded in 1976. It is domiciled in the United States and listed on the London Stock Exchange. Quarto creates and sells illustrated books for adults and children, across 50 countries and in 40 languages, through a variety of traditional and non-traditional channels. Quarto employs c.330 people in eight offices in London, Brighton, New York City, Boston, Seattle, Southern California and Hong Kong.
https://en.wikipedia.org/wiki/The_Quarto_Group