Cobalt colors other than blue
Cobalt Colors Other Than Blue is a 1912 technical bulletin from the University of Illinois at Urbana, written by R. T. Stull, G. H. Baldwin and Barney S. Radcliffe for ceramic chemists and porcelain manufacturers. Its pictures are plain line graphs and phase diagrams with gridded axes, plotted points, curves and hatched regions, showing compositions and firing results. A designer might take from them the restrained grid-and-curve vocabulary of early scientific charts for diagrammatic layouts.
