Эта тема долго не покидала страницы газет: например, New York Times, «Colour-blindness and its dangers» (8 July 1878); «Color-blindness: How it endangers railroad travelers – some interesting experiments before a Massachusetts legislative committee» (26 January 1879); «Color-blindness of railroad men» (23 May 1879); «Color-blind railroad men: A large per centage of defective vision in the employees of a Massachusetts road» (17 August 1879); «Color-blindness» (17 August 1879). См. также: Turner 1994, 177.
