We don't have much information about this fascinating collection of vintage Nigerian silk-screened workplace safety posters. They were collected by an American who worked in Nigeria in the 1960's. All of them were silk-screen printed by the Federal Ministry of Information and issued by the Federal Ministry of Labor. They are signed by a number of different artists, including L. A. Ogunade, Eben. Alder, S. A. Jinadu and J. Owei.